SIST EN 13450:2013
(Main)Aggregates for railway ballast
Aggregates for railway ballast
This European Standard specifies the properties of aggregates obtained by processing natural, manufactured or recycled crushed unbound aggregates for use in construction of the upper layer of railway track. For the purposes of this standard, the aggregate is referred to as railway ballast. A list of the source materials that have been considered and are within the scope of this European Standard is given in Annex E (normative). NOTE Reused railway ballast: railway ballast resulting of previously used railway ballast on site and without putting it on the market is not covered by this European Standard. It also specifies that a quality control system is in place for use in factory production control and it provides for the evaluation of conformity of the products to this European Standard. It incorporates a general requirement that railway ballast should not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination. Railway ballast used in construction should comply with all the requirements of this European Standard. The standard includes comprehensive and specific requirements for natural aggregates and recycled ballast, dealing with, for example, the stability of certain basalts. For materials from some other secondary sources, however, work is ongoing and the requirements are incomplete. In the meantime such materials, when placed on the market as railway ballast, should conform fully to this standard but may also be required to conform to specific relevant additional requirements at the place of use. Additional characteristics and requirements may be specified on a case by case basis depending upon experience of use of the product, and defined in specific contractual documents. Requirements for the declaration of the potential of railway ballast to release regulated dangerous substances are currently under development. Until such time as these are finalised, attention should be paid to requirements at the place of use.
Gesteinskörnungen für Gleisschotter
Die vorliegende Europäische Norm legt die Eigenschaften von Gesteinskörnungen für die Verwendung beim
Bau der oberen Schicht von Bahnkörpern fest, die durch Aufbereitung natürlicher oder industriell hergestellter
Materialien oder gebrochener ungebundener rezyklierter Gesteinskörnungen gewonnen werden. Für die
Zwecke dieser Norm werden die Gesteinskörnungen als Gleisschotter bezeichnet.
Anhang E (normativ) enthält ein Verzeichnis der berücksichtigten Ausgangsmaterialien, die im Anwendungsbereich
dieser Europäischen Norm liegen.
ANMERKUNG 1 Wiederverwendeter Gleisschotter: Gleisschotter, der aus an der Baustelle vorher verwendetem
Gleisschotter stammt und nicht in Verkehr gebracht wurde, ist nicht Gegenstand dieser Europäischen Norm.
Die Norm enthält ebenfalls die Festlegung, dass ein Qualitätskontrollsystem für die werkseigene
Produktionskontrolle einzuführen ist sowie Festlegungen für die Bewertung der Konformität von Produkten
nach dieser Europäischen Norm.
Sie enthält die allgemeine Anforderung, dass die Freisetzung gefährlicher Stoffe aus Gleisschotter die in der
für das Material einschlägigen Europäischen Norm festgelegten maximal zulässigen Grenzwerte bzw. die
nach den nationalen Bestimmungen des Bestimmungsmitgliedstaats zulässigen Grenzwerte nicht übersteigen
darf (siehe ANMERKUNG 2).
ANMERKUNG 2 Im Bauwesen verwendeter Gleisschotter sollte mit allen Anforderungen dieser Europäischen Norm
übereinstimmen. Diese Norm enthält umfassende und spezifische Anforderungen an natürliche Gesteinskörnungen und
an rezyklierten Gleisschotter, die sich zum Beispiel mit der Raumbeständigkeit einiger Basalte befassen.
Die Arbeiten an Materialien aus weiteren sekundären Quellen sind jedoch noch nicht abgeschlossen und die
Anforderungen sind unvollständig. In der Zwischenzeit sollten solche Materialien, sofern sie als Gleisschotter in Verkehr
gebracht werden, den Anforderungen dieser Norm voll entsprechen. Unter Umständen müssen sie aber auch zusätzliche
spezifische Anforderungen, die am Verwendungsort gelten, erfüllen. Abhängig von den Erfahrungen mit der Anwendung
des Produkts dürfen im Einzelfall zusätzliche Eigenschaften und Anforderungen festgelegt werden und in den spezifischen
Vertragsunterlagen definiert werden.
ANMERKUNG 3 Zurzeit werden Anforderungen an die Angabe des Potenzials von Gleisschotter, gesetzlich geregelte
gefährliche Stoffe freizusetzen, erarbeitet. Bis zur Fertigstellung dieser Anforderungen sollten die Anforderungen am
Verwendungsort beachtet werden.
Granulats pour ballasts de voies ferrées
La présente Norme européenne spécifie les caractéristiques des granulats obtenus par traitement de granulats
concassés naturels, artificiels ou recyclés utilisés dans la construction de la couche supérieure de la voie
ferrée. Pour les besoins de la présente norme, les granulats sont appelés ballasts de voies ferrées.
Une liste des matériaux sources qui ont été pris en considération et relèvent du domaine d’application de la
présente Norme européenne est donné à l’Annexe E (normative).
NOTE 1 Ballast de voie ferré réutilisé : un ballast de voie ferrée provenant d’un ballast de voie ferrée précédemment
utilisé sur site et non commercialisé n'est pas couvert par la présente Norme européenne.
Elle spécifie également qu’un système de contrôle de la qualité est mis en place en vue du contrôle de la
production en usine de granulats et elle prévoit l’évaluation de la conformité des produits à la présente Norme
européenne.
La présente norme intègre une exigence générale stipulant qu’il convient que les ballasts de voies ferrées ne
dégagent aucune substance dangereuse dont les valeurs d’émission dépassent les niveaux maximaux
admissibles spécifiés dans une Norme européenne pertinente pour le matériau ou dans la réglementation
nationale de l’Etat membre de destination (voir NOTE 2).
NOTE 2 Les ballasts de voies ferrées utilisés dans la construction doivent satisfaire à toutes les exigences de la
présente Norme européenne. La norme contient des exigences détaillées et spécifiques relatives aux granulats naturels et
au ballast recyclé, et traitent par exemple de la stabilité de certains basaltes.
Cependant, pour les matériaux provenant de certaines autres sources secondaires, les travaux sont en cours
et les exigences sont incomplètes. Dans l’intervalle, il convient que ces matériaux, lorsqu’ils sont mis sur le
marché en tant que ballasts de voies ferrées, respectent pleinement la présente norme, mais ils peuvent aussi
devoir se conformer à des exigences complémentaires spécifiques pertinentes sur le lieu d’utilisation. Des
caractéristiques et des exigences complémentaires peuvent être spécifiées au cas par cas, en fonction de
l’expérience acquise à l’usage du produit, et définies dans des documents contractuels spécifiques.
NOTE 3 Les exigences relatives à la déclaration du potentiel des ballasts de voies ferrées à dégager des substances
dangereuses réglementées sont actuellement en cours d’élaboration. Tant qu’elles ne sont pas finalisées, il convient de
tenir compte des exigences en vigueur sur le lieu d’utilisation.
Agregati za grede železniških prog
Ta evropski standard določa lastnosti agregatov, pridobljenih z obdelavo naravnih, umetnih ali recikliranih zdrobljenih nevezanih agregatov za uporabo pri konstrukciji zgornje plasti železniških prog. V tem mednarodnem standardu se agregat imenuje greda železniških prog. Seznam obravnavanih izvornih materialov, ki so predmet tega standarda, je naveden v dodatku E (normativni). OPOMBA: Ponovno uporabljene grede železniških prog: v tem evropskem standardu niso zajete grede železniških prog, ki so bile že uporabljene na mestu vgradnje in niso bile dane na tržišče. Prav tako določa, da mora biti pri kontroli proizvodnje v obratu vzpostavljen sistem kontrole kakovosti, in opredeljuje vrednotenje skladnosti izdelkov s tem evropskim standardom. Vključuje splošno zahtevo o tem, da grede železniških prog ne smejo oddajati nobenih nevarnih snovi v količinah, ki so večje od največjih dovoljenih količin v ustreznem evropskem standardu za materiale ali v nacionalni zakonodaji države članice. Grede železniških prog, ki se uporabljajo pri konstrukcijah, morajo izpolnjevati vse zahteve tega evropskega standarda. Standard vključuje celovite in posebne zahteve za naravne agregate in reciklirane grede železniških prog, na primer v zvezi z obravnavo stabilnosti nekaterih bazaltov. Za materiale iz nekaterih drugih sekundarnih virov oblikovanje standardov še poteka in so zahteve nepopolne. Kadar so taki materiali dani na tržišče kot grede železniških prog, morajo v celoti ustrezati temu standardu in morajo biti morda skladni tudi s posebnimi ustreznimi dodatnimi zahtevami, ki veljajo na območju uporabe. Dodatne značilnosti in zahteve se lahko določijo za vsak posamezen primer glede na izkušnje pri uporabi izdelka in so opredeljene v posebnih pogodbenih dokumentih. Zahteve za izjavo o kapaciteti gred železniških prog za izpust reguliranih nevarnih snovi so v pripravi. Dokler te zahteve niso dokončno oblikovane, je treba upoštevati zahteve na območju uporabe.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Agregati za grede železniških progGesteinskörnungen für GleisschotterGranulats pour ballasts de voies ferréesAggregates for railway ballast93.100Gradnja železnicConstruction of railways91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 13450:2013SIST EN 13450:2013en,fr,de01-julij-2013SIST EN 13450:2013SLOVENSKI
STANDARDSIST EN 13450:2003/AC:2004SIST EN 13450:20031DGRPHãþD
SIST EN 13450:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13450
May 2013 ICS 91.100.15; 93.100 Supersedes EN 13450:2002English Version
Aggregates for railway ballast
Granulats pour ballasts de voies ferrées
Gesteinskörnungen für Gleisschotter This European Standard was approved by CEN on 22 December 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13450:2013: ESIST EN 13450:2013
EN 13450:2013 (E) 2 Contents page
Foreword . 3 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 6 4 Geometrical requirements . 7 5 Physical requirements . 10 6 Chemical requirements . 12 7 Durability . 13 8 Evaluation of conformity . 15 9 Designation . 15 10 Marking and labelling . 16 Annex A (informative)
Sampling railway ballast at the construction site either from a railway wagon or from the track . 17 Annex B (informative)
Guidance on interpretation of results when samples of railway ballast have been taken from railway wagon or from track . 21 Annex C (normative)
Conditions to be applied to the test procedure specified in EN 1367-2 for the determination of the resistance of railway ballast to the magnesium sulfate test (see 7.2) . 22 Annex D (normative)
Conditions to be applied to the test procedure specified in EN 1367-1 for determination of the resistance to freezing and thawing of railway ballast (see 7.3.2) . 24 Annex E (normative)
Source materials considered in the development of EN 13450 and their status in respect of the scope of this standard . 25 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 26 Bibliography . 33
SIST EN 13450:2013
EN 13450:2013 (E) 3 Foreword This document (EN 13450:2013) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2013, and conflicting national standards shall be withdrawn at the latest by February 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13450:2002. The main changes compared to the previous edition are: 1) Updating of the normative references (deletion of the reference to EN 932-5, updating of the references to EN 1367-1:2007 and EN 1367-2:2009 and addition of the references to EN 1367-6 and
EN 16236-2013). 2) Modification of the definition to "recycled railway ballast". 3) Addition of note 3 in Clause 4. 4) Modification of Tables 1, 2, 3, 4, 5, 6, 7, 8 and 9 due to changes in the category names. 5) Addition of new sub-clauses 7.3 "Freeze-thaw resistance" and 7.4 "Electrical conductivity". 6) Modification of sub-clause 7.5 "Sonnenbrand". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Requirements for other end uses of aggregates will be specified in the following European Standards: EN 12620, Aggregates for concrete; EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas; EN 13055, Lightweight aggregates; EN 13139, Aggregates for mortar; EN 13242, Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction; EN 13383-1, Armourstone – Part 1: Specification. Considering evaluation of conformity see EN 16236, Evaluation of Conformity. SIST EN 13450:2013
EN 13450:2013 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 13450:2013
EN 13450:2013 (E) 5 1 Scope This European Standard specifies the properties of aggregates obtained by processing natural, manufactured or recycled crushed unbound aggregates for use in construction of the upper layer of railway track. For the purposes of this standard, the aggregate is referred to as railway ballast. A list of the source materials that have been considered and are within the scope of this European Standard is given in Annex E (normative).
NOTE Reused railway ballast: railway ballast resulting of previously used railway ballast on site and without putting it on the market is not covered by this European Standard. It also specifies that a quality control system is in place for use in factory production control and it provides for the evaluation of conformity of the products to this European Standard. It incorporates a general requirement that railway ballast should not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination. Railway ballast used in construction should comply with all the requirements of this European Standard. The standard includes comprehensive and specific requirements for natural aggregates and recycled ballast, dealing with, for example, the stability of certain basalts. For materials from some other secondary sources, however, work is ongoing and the requirements are incomplete. In the meantime such materials, when placed on the market as railway ballast, should conform fully to this standard but may also be required to conform to specific relevant additional requirements at the place of use. Additional characteristics and requirements may be specified on a case by case basis depending upon experience of use of the product, and defined in specific contractual documents.
Requirements for the declaration of the potential of railway ballast to release regulated dangerous substances are currently under development. Until such time as these are finalised, attention should be paid to requirements at the place of use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 932-1:1996, Tests for general properties of aggregates — Part 1: Methods for sampling EN 932-3, Tests for general properties of aggregates — Part 3: Procedure and terminology for simplified petrographic description EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size distribution — Sieving method EN 933-3, Tests for geometrical properties of aggregates — Part 3: Determination of particle shape — Flakiness index EN 933-4, Tests for geometrical properties of aggregates — Part 4: Determination of particle shape — Shape index EN 1097-1, Tests for mechanical and physical properties of aggregates — Part 1: Determination of the resistance to wear (micro-Deval) SIST EN 13450:2013
EN 13450:2013 (E) 6 EN 1097-2, Tests for mechanical and physical properties of aggregates — Part 2: Methods for the determination of resistance to fragmentation EN 1097-6, Tests for mechanical and physical properties of aggregates — Part 6: Determination of particle density and water absorption EN 1367-1:2007, Tests for thermal and weathering properties of aggregates — Part 1: Determination of resistance to freezing and thawing EN 1367-2:2009, Tests for thermal and weathering properties of aggregates — Part 2: Magnesium sulfate test EN 1367-3, Tests for thermal and weathering properties of aggregates — Part 3: Boiling test for “Sonnenbrand basalt” EN 1367-6, Tests for thermal and weathering properties of aggregates — Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl) EN 16236:2013, Evaluation of conformity of aggregates — Initial Type Testing and Factory Production Control 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aggregate
granular material used in construction Note 1 to entry: Aggregates may be natural, manufactured or recycled. 3.2 railway ballast aggregate where 100 % of the surface of the particles can be described as totally crushed used in the construction of the upper layer of railway track, with sizes e. g. 22/40 mm, 31,5/50 mm or 31,5/63 mm 3.3 natural railway ballast aggregate for railway ballast from mineral sources which have been subjected to nothing more than mechanical processing Note 1 to entry: Natural railway ballast should be produced without blending material from different geological sources. 3.4 manufactured railway ballast railway ballast of mineral origin resulting from an industrial process involving thermal or other modification 3.5 recycled railway ballast railway ballast resulting from the processing of inorganic or mineral material previously used in construction 3.6 category level of a property of railway ballast expressed as a range of values or a limiting value Note 1 to entry: There is no relationship between the categories of different properties. SIST EN 13450:2013
EN 13450:2013 (E) 7 3.7 railway ballast size designation of railway ballast in terms of lower (d) and upper (D) sieve sizes expressed as d/D Note 1 to entry: This designation accepts the presence of some particles which are retained on the upper sieve (oversize) and some which pass the lower sieve (undersize) 3.8 fine particles particle size fraction of railway ballast which passes the 0,5 mm sieve 3.9 fines particle size fraction of railway ballast which passes the 0,063 mm sieve 4 Geometrical requirements 4.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required, the tests in Clause 4 specified shall be carried out to determine appropriate geometrical properties. When the value of a property is required but not defined by specified limits the value should be declared as an XXDeclared category, e.g. in Table 4 a value of say 40 for the flakiness index corresponds to FIRB40 (Declared value). NOTE 1 When a property is not required, a “No requirement” category can be used. NOTE 2 Guidance on selection of appropriate categories for specific applications can be found in national provisions in the place of use of the railway ballast. NOTE 3 Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). Sampling shall be carried out in accordance with EN 932-1. NOTE 4 Advice on sampling from a wagon or the track at the laying site is given in Annex A. NOTE 5 Guidance on interpretation of results when samples of railway ballast have been taken from railway wagon or out of track is given in Annex B. 4.2 Railway ballast size Railway ballast size shall be specified using a pair of sieve sizes in millimetre with d as the lower limit designation sieve and D as the upper limit designation sieve between which most of the particle size distribution lies. 4.3 Grading The grading of the railway ballast shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 1. SIST EN 13450:2013
EN 13450:2013 (E) 8 Table 1 — Categories for grading Sieve size
mm Railway ballast size 31,5 mm to 50 mm Railway ballast size 31,5 mm to 63 mm Railway ballast size 22 mm to 40 mm Percentage passing by mass Grading category GC RB A GC RB B GC RB C GC RB D GC RB E 80 63 50 40 31,5 22,4 16 8 31,5 to 50 31,5 to 63 100 100 70 to 99 30 to 65 1 to 25 0 to 3 - - ≥ 50 - 100 95 to 100 65 to 99 30 to 65 1 to 25 0 to 3 - - - ≥ 50 100 95 to 100 55 to 99 25 to 75 1 to 25 0 to 3 - - - ≥ 50 100 93 to 100 45 to 70 15 to 40 0 to 7 0 to 7 - - - ≥ 85 - - 100 90 to 100 60 to 98 15 to 60 0 to 15 0 to 2 - - NOTE The requirement for passing the 22,4 mm sieve applies to railway ballast sampled at the place of production.
In certain circumstances a 25 mm sieve may be used as an alternative to the 22,4 mm sieve, when a tolerance of 0 to 5 would apply. When assessing production within a system of FPC, at least 90 % of gradings, taken on different batches within a maximum period of 6 months, shall fall within the limits specified in Table 1.
4.4 Content of fine particles The content of fine particles shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 2. Table 2 — Categories for fine particles content Sieve size Maximum percentage passing by mass Fine particle category mm GF RB A GF RB B GF RB Declared GF RB C 0,5 0,6 1,0 > 1,0 No requirement NOTE The requirement applies to railway ballast sampled at the place of production.
4.5 Fines content The fines content shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 3. When required, cleanliness shall be assessed from the fines content. Fines shall be considered non-harmful if the total fines content is less than the relevant category specified in Table 3 in accordance with the provisions valid in the place of use of the aggregate. SIST EN 13450:2013
EN 13450:2013 (E) 9 Table 3 — Categories for fines content
Sieve size Maximum percentage passing by mass Fines content category mm fRB A fRB B fRB C fRB Declared fRB D 0,063 0,5 1,0 1,5 > 1,5 No requirement NOTE The requirement applies to railway ballast sampled at the place of production.
4.6 Particle shape - Flakiness index and shape index When required, the shape of railway ballast shall be determined in accordance with EN 933-3 in terms of the flakiness index and the results declared in accordance with the relevant category specified in Table 4. The flakiness index shall be the reference test for the determination of the shape. Table 4 — Categories for maximum values of flakiness index Flakiness Index Category FIRB ≤ 15 ≤ 20 ≤ 25 4 to 25 > 25 FIRB 15 FIRB 20 FIRB 25 FIRB 4/25 FIRB Declared No requirement FIRB NR
When required, the shape index of railway ballast shall be determined in accordance with EN 933-4 and the results declared in accordance with the relevant category specified in Table 5. Table 5 — Categories for maximum values of shape index Shape Index Category SIRB ≤ 10 ≤ 20 ≤ 30 5 to 30 > 30 SIRB 10 SIRB 20 SIRB 30 SIRB 5/30
SIRB Declared No requirement SIRB NR
SIST EN 13450:2013
EN 13450:2013 (E) 10 4.7 Particle length Particle length of railway ballast shall be assessed by measuring with an appropriate gauge or callipers. Limits should be selected from the specified range until such a time as there is more data available on railway ballast properties related to performance. When required, the particle length of railway ballast shall be determined and the results declared in accordance with the relevant category specified in Table 6. Table 6 — Categories for maximum values of particle length
Percentage by mass with length ≥ 100 mm in a greater than 40 kg sample Particle length category LRB A LRB B LRB C LRB D LRB Declared LRB E ≤ 4 ≤ 6 ≤ 8 ≤ 12 > 12 No requirement
5 Physical requirements 5.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required, the tests specified in Clause 5 shall be carried out to determine appropriate physical properties. When the value of a property is required but not defined by specified limits the value should be declared as an XXDeclared category, e.g. in Table 7 a Los Angeles coefficient of say 30 corresponds to LARB 30(Declared value). NOTE 1 When a property is not required, a “No requirement” category can be used. NOTE 2 Guidance on selection of appropriate categories for specific applications can be found in national provisions in the place of use of the railway ballast. NOTE 3 Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). 5.2 Resistance to fragmentation 5.2.1 Los Angeles
When required, the resistance to fragmentation of railway ballast shall be determined in terms of the Los Angeles coefficient as specified in EN 1097-2, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 7.
SIST EN 13450:2013
EN 13450:2013 (E) 11 Table 7 — Categories for maximum values of Los Angeles coefficient Los Angeles coefficient Category LARB ≤ 12 ≤ 14 ≤ 16 ≤ 20 ≤ 22 ≤ 24 > 24 LARB 12 LARB 14 LARB 16 LARB 20 LARB 22 LARB 24
LARB Declared No requirement LARB NR
5.2.2 Resistance to impact Where required, the impact value of railway ballast shall be determined in accordance with EN 1097-2, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 8. Table 8 — Categories for maximum values of resistance to impact Impact value % Category SZRB ≤ 14 ≤ 18 ≤ 20 ≤ 22 > 22 SZRB 14 SZRB 18 SZRB 20 SZRB 22
SZRB Declared No requirement SZRB NR
SIST EN 13450:2013
EN 13450:2013 (E) 12 5.3 Resistance to wear When required, the resistance to wear of railway ballast shall be determined in accordance with EN 1097-1, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 9. Table 9 — Categories for maximum values of resistance to wear micro-Deval coefficient Category MDE RB ≤ 5 ≤ 7 ≤ 9 ≤ 11 ≤ 13 ≤ 15 > 15 MDE RB 5 MDE RB 7 MDE RB 9 MDE RB 11 MDE RB 13 MDE RB 15
MDE RB Declared No requirement MDE RB NR
5.4 Particle density and water absorption 5.4.1 Particle density When required, the particle density shall be determined in accordance with EN 1097-6 (apparent density) and the results declared. 5.4.2 Water absorption When required, the water absorption shall be determined in accordance with EN 1097-6 depending upon the size of the railway ballast and the results declared. 6 Chemical requirements 6.1 General Railway ballast shall not contain other components or matter than specified in this standard. 6.2 Petrographic description When required, the petrographic description of railway ballast shall be determined and described in accordance with EN 932-3 and the results declared. SIST EN 13450:2013
EN 13450:2013 (E) 13 7 Durability 7.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required, the tests specified in Clause 7 shall be carried out to determine appropriate properties for the durability of railway ballast. NOTE Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). 7.2 Magnesium sulfate soundness When required, the resistance to weathering of railway ballast shall be determined in accordance with the magnesium sulfate soundness test in EN 1367-2, using the conditions as specified in Annex C, and the results declared in accordance with the relevant category specified in Table 10. Table 10 — Categories for maximum magnesium sulfate soundness Magnesium sulfate value Category Percentage loss of mass MSRB
≤ 3 MSRB 3 ≤ 6 MSRB 6 > 6 MSRB Declared No requirement MSRB NR
7.3 Freeze-thaw resistance
7.3.1 Water absorption as a screening test for freeze-thaw resistance When required, the water absorption value as a screening test shall be determined in accordance with the procedures specified in EN 1097-6 and the result declared. If the water absorption, determined in accordance with EN 1097-6 (water absorption of railway ballast saturated to constant mass), is not greater than 0,5, the railway ballast shall be assumed to be freeze thaw resistant. If the water absorption, determined in accordance with EN 1097-6 (water absorption of railway ballast saturated to constant mass), is greater than 0,5, then the resistance to freezing and thawing shall be determined in accordance with 7.3.2 or 7.3.3. NOTE With some railway ballast containing a proportion of porous flint aggregate sources the differentiation between satisfactory and unsatisfactory freeze-thaw durability can be better assessed by density measurements rather than water absorption. 7.3.2 Resistance to freezing and thawing When required, the resistance to freezing and thawing shall be determined in accordance with EN 1367-1, using the conditions as specified in Annex D, and the results declared in accordance with the relevant category specified in Table 11. SIST EN 13450:2013
EN 13450:2013 (E) 14 Table 11 — Categories for maximum freeze-thaw resistance values Freeze-thaw Category Percentage loss of mass FRB ≤ 1 FRB 1 ≤ 2 FRB 2 ≤ 4 FRB 4 > 4 FRB Declared No requirement FRB NR
7.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions) When required (see Note below), the resistance to freezing and thawing shall be determined in accordance with EN 1367-6 and the results declared in accordance with the relevant category specified in Table 12. In this case, the resistance to freezing and thawing (see 7.3.2.) shall not be determined. NOTE The results of this test provide a means for assessing an aggregate’s resistance to frost weathering in areas where frequent freeze-thaw cycling occurs with seawater sprays or abundant de-icers conditions, and where result values of EN 1367-1 test method do not describe correctly aggregate performance in extreme conditions. This test has been found to be appropriate for certain petrographic types of aggregate (e.g. basalts) under severe conditions of use and may not be universally applicable to all rock types. Table 12 — Categories for maximum freeze-thaw resistance in the presence of salt
Freeze-thaw Category Percentage loss of mass
FEC RB ≤ 2 FEC RB 2 ≤ 4 FEC RB 4 ≤ 5 FEC RB 5 ≤ 6 FEC RB 6 ≤ 8 FEC RB 8 > 8 F EC RB Declared No requirement FEC RB NR NOTE When tests using de-icing solutions other than NaCl, the limits of Table 12 would not apply.
7.4 Electrical conductivity When required, the electrical conductivity of railway ballast shall be determined.
Requirements for the declaration of the electrical conductivity of railway ballast are currently under development. Until such time as these are finalised attention should be paid to requirements at the place of use. SIST EN 13450:2013
EN 13450:2013 (E) 15 7.5 Sonnenbrand Where signs of "Sonnenbrand" are known the loss of mass and the resistance to fragmentation shall be determined in accordance with EN 1367-3 and EN 1097-2. NOTE "Sonnenbrand" is a type of rock decay that can be present in some basalts and manifests itself under the influence of atmospheric conditions. It starts with the appearance of grey/white coloured spots. Usually hairline cracks are generated radiating out from the spots and interconnecting them. This reduces the strength of the mineral fabric, and as a result the rock decays to small particles. Depending on the source this process can take place within months of extraction or extend over several decades. In exceptional cases, a rapid decay results in the formation of large cracks and the breaking of aggregate particles. On completion of the boiling test, the loss of mass and the resistance to fragmentation (SBRB SZ or SBRB LA) shall be declared in accordance with the relevant category specified in Table 13.
Table 13 — Categories for maximum values of resistance to “Sonnenbrand” Test Method Result Value Category SBRB Boiling test And either a) Impact test or b) Los Angeles test Loss of mass after boiling
Increase of impact value after boiling
Increase of Los Angeles coefficient after boiling ≤ 1
≤ 3
≤ 5
SBRB SZ
SBRB LA Boiling test And either a) Impact test or b) Los Angeles test Loss of mass after boiling
Increase of impact value after boiling
Increase of Los Angeles coefficient after boiling > 1
> 3
> 5
SBRB SZ Declared
SBRB LA Declared No requirement SBRB NR 8 Evaluation of conformity
The producer shall undertake Initial Type Tests and Factory Production Control in accordance with EN 16236 to ensure that the product
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Agregati za grede železniških progGesteinskörnungen für GleisschotterGranulats pour ballasts de voies ferréesAggregates for railway ballast93.100Gradnja železnicConstruction of railways91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:FprEN 13450kSIST FprEN 13450:2012en,fr,de01-september-2012kSIST FprEN 13450:2012SLOVENSKI
STANDARD
kSIST FprEN 13450:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 13450
June 2012 ICS 91.100.15; 93.100 Will supersede EN 13450:2002English Version
Aggregates for railway ballast
Granulats pour ballasts de voies ferrées
Gesteinskörnungen für Gleisschotter This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 154.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 13450:2012: EkSIST FprEN 13450:2012
FprEN 13450:2012 (E) 2 Contents page
Foreword . 31Scope . 42Normative references . 43Terms and definitions . 54Geometrical requirements . 65Physical requirements . 96Chemical requirements . 117Durability . 128Evaluation of conformity . 149Designation . 1410Marking and labelling . 15Annex A (informative)
Sampling railway ballast at the construction site either from a railway wagon or from the track . 16Annex B (informative)
Guidance on interpretation of results when samples of railway ballast have been taken from railway wagon or from track . 20Annex C (normative)
Conditions to be applied to the test procedure specified in EN 1367-2 for the determination of the resistance of railway ballast to the magnesium sulfate test (see 7.2) . 21Annex D (normative)
Conditions to be applied to the test procedure specified in EN 1367-1 for determination of the resistance to freezing and thawing of railway ballast (see 7.3.2) . 23Annex E (normative)
Source materials considered in the development of EN 13450 and their status in respect of the scope of this standard . 24Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 25Bibliography . 32
kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 3 Foreword This document (FprEN 13450:2012) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This document is currently submitted to the Unique Acceptance Procedure. This document will supersede EN 13450:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Requirements for other end uses of aggregates will be specified in the following European Standards: EN 12620, Aggregates for concrete; EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas; EN 13055, Lightweight aggregates; EN 13139, Aggregates for mortar; EN 13242, Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction; EN 13383-1, Armourstone – Part 1: Specification. Considering evaluation of conformity see FprEN 16236, Evaluation of Conformity.
kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 4 1 Scope This European Standard specifies the properties of aggregates obtained by processing natural, manufactured or recycled crushed unbound aggregates for use in construction of the upper layer of railway track. For the purposes of this standard, the aggregate is referred to as railway ballast. A list of the source materials that have been considered and are within the scope of this European Standard is given in Annex E (normative).
NOTE 1 Reused railway ballast: railway ballast resulting of previously used railway ballast on site and without putting it on the market is not covered by this European Standard. It also specifies that a quality control system is in place for use in factory production control and it provides for the evaluation of conformity of the products to this European Standard. It incorporates a general requirement that railway ballast should not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination (see NOTE 2). NOTE 2 Railway ballast used in construction should comply with all the requirements of this European Standard. The standard includes comprehensive and specific requirements for natural aggregates and recycled ballast, dealing with, for example, the stability of certain basalts. For materials from some other secondary sources, however, work is ongoing and the requirements are incomplete. In the meantime such materials, when placed on the market as railway ballast, should conform fully to this standard but may also be required to conform to specific relevant additional requirements at the place of use. Additional characteristics and requirements may be specified on a case by case basis depending upon experience of use of the product, and defined in specific contractual documents.
NOTE 3 Requirements for the declaration of the potential of railway ballast to release regulated dangerous substances are currently under development. Until such time as these are finalised, attention should be paid to requirements at the place of use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 932-1, Tests for general properties of aggregates — Part 1: Methods for sampling EN 932-3, Tests for general properties of aggregates — Part 3: Procedure and terminology for simplified petrographic description EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size distribution — Sieving method EN 933-3, Tests for geometrical properties of aggregates — Part 3: Determination of particle shape — Flakiness index EN 933-4, Tests for geometrical properties of aggregates — Part 4: Determination of particle shape — Shape index EN 1097-1, Tests for mechanical and physical properties of aggregates — Part 1: Determination of the resistance to wear (micro-Deval) kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 5 EN 1097-2, Tests for mechanical and physical properties of aggregates — Part 2: Methods for the determination of resistance to fragmentation EN 1097-6, Tests for mechanical and physical properties of aggregates — Part 6: Determination of particle density and water absorption EN 1367-1, Tests for thermal and weathering properties of aggregates — Part 1: Determination of resistance to freezing and thawing EN 1367-2, Tests for thermal and weathering properties of aggregates — Part 2: Magnesium sulfate test EN 1367-3, Tests for thermal and weathering properties of aggregates — Part 3: Boiling test for “Sonnenbrand basalt” EN 1367-6, Tests for thermal and weathering properties of aggregates — Part 6: Determination of resistance to freezing and thawing in the presence of salt (NaCl) FprEN 16236, Evaluation of conformity of aggregates 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aggregate
granular material used in construction Note 1 to entry: Aggregates may be natural, manufactured or recycled. 3.2 railway ballast aggregate where 100 % of the surface of the particles can be described as totally crushed used in the construction of the upper layer of railway track, with sizes e. g. 22/40 mm, 31,5/50 mm or 31,5/63 mm 3.3 natural railway ballast aggregate for railway ballast from mineral sources which have been subjected to nothing more than mechanical processing Note 1 to entry: Natural railway ballast should be produced without blending material from different geological sources. 3.4 manufactured railway ballast railway ballast of mineral origin resulting from an industrial process involving thermal or other modification 3.5 recycled railway ballast railway ballast resulting from the processing of inorganic or mineral material previously used in construction 3.6 category level of a property of railway ballast expressed as a range of values or a limiting value Note 1 to entry: There is no relationship between the categories of different properties. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 6 3.7 railway ballast size designation of railway ballast in terms of lower (d) and upper (D) sieve sizes expressed as d/D Note 1 to entry: This designation accepts the presence of some particles which are retained on the upper sieve (oversize) and some which pass the lower sieve (undersize) 3.8 fine particles particle size fraction of railway ballast which passes the 0,5 mm sieve 3.9 fines particle size fraction of railway ballast which passes the 0,063 mm sieve 4 Geometrical requirements 4.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required, the tests in Clause 4 specified shall be carried out to determine appropriate geometrical properties. NOTE 1 When the value of a property is required but not defined by specified limits the value should be declared as an XXDeclared category, e.g. in Table 4 a value of say 40 for the flakiness index corresponds to FIRB40 (Declared value). NOTE 2 When a property is not required, a “No requirement” category can be used. NOTE 3 Guidance on selection of appropriate categories for specific applications can be found in national provisions in the place of use of the railway ballast. NOTE 4 Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). Sampling shall be carried out in accordance with EN 932-1. NOTE 5 Advice on sampling from a wagon or the track at the laying site is given in Annex A. NOTE 6 Guidance on interpretation of results when samples of railway ballast have been taken from railway wagon or out of track is given in Annex B. 4.2 Railway ballast size Railway ballast size shall be specified using a pair of sieve sizes in millimetre with d as the lower limit designation sieve and D as the upper limit designation sieve between which most of the particle size distribution lies. 4.3 Grading The grading of the railway ballast shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 1. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 7 Table 1 — Categories for grading Sieve size
mm Railway ballast size 31,5 mm to 50 mm Railway ballast size 31,5 mm to 63 mm Railway ballast size 22 mm to 40 mm Percentage passing by massGrading categoryGC RB A GCRB BGCRB CGC RB D GCRB E80 63 50 40 31,5 22,4 16 8 31,5 to 50 31,5 to 63 100 100 70 to 99 30 to 65 1 to 25 0 to 3 - - ≥ 50 - 100 95 to 100 65 to 99 30 to 65 1 to 25 0 to 3 - - - ≥ 50 100 95 to 100 55 to 99 25 to 75 1 to 25 0 to 3 - - - ≥ 50 100 93 to 100 45 to 70 15 to 40 0 to 7 0 to 7 - - - ≥ 85 - - 100 90 to 100 60 to 98 15 to 60 0 to 15 0 to 2 - - NOTE 1 The requirement for passing the 22,4 mm sieve applies to railway ballast sampled at the place of production. NOTE 2 In certain circumstances a 25 mm sieve may be used as an alternative to the 22,4 mm sieve, when a tolerance of 0 to 5 would apply. NOTE 3 When assessing production within a system of FPC, at least 90 % of gradings, taken on different batches within a maximum period of 6 months, shall fall within the limits specified in Table 1.
4.4 Content of fine particles The content of fine particles shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 2. Table 2 — Categories for fine particles content Sieve size Maximum percentage passing by mass Fine particle category mm GF RB A GF RB B GF RB Declared GF RB C 0,5 0,6 1,0 > 1,0 No requirement NOTE The requirement applies to railway ballast sampled at the place of production.
4.5 Fines content The fines content shall be determined in accordance with EN 933-1 and the results declared in accordance with the relevant category specified in Table 3. When required, cleanliness shall be assessed from the fines content. Fines shall be considered non-harmful if the total fines content is less than the relevant category specified in Table 3 in accordance with the provisions valid in the place of use of the aggregate. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 8 Table 3 — Categories for fines content
Sieve size Maximum percentage passing by mass Fines content category mm fRB A fRB B fRB C fRB Declared fRB D 0,063 0,5 1,0 1,5 > 1,5 No requirement NOTE. The requirement applies to railway ballast sampled at the place of production.
4.6 Particle shape - Flakiness index and shape index When required, the shape of railway ballast shall be determined in accordance with EN 933-3 in terms of the flakiness index and the results declared in accordance with the relevant category specified in Table 4. The flakiness index shall be the reference test for the determination of the shape. Table 4 — Categories for maximum values of flakiness index Flakiness Index Category FIRB ≤ 15 ≤ 20 ≤ 25 4 to 25 > 25 FIRB 15 FIRB 20 FIRB 25 FIRB 4/25 FIRB Declared No requirement FIRB NR
When required, the shape index of railway ballast shall be determined in accordance with EN 933-4 and the results declared in accordance with the relevant category specified in Table 5. Table 5 — Categories for maximum values of shape index Shape Index Category SIRB ≤ 10 ≤ 20 ≤ 30 5 to 30 > 30 SIRB 10 SIRB 20 SIRB 30 SIRB 5/30
SIRB Declared No requirement SIRB NR
kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 9 4.7 Particle length Particle length of railway ballast shall be assessed by measuring with an appropriate gauge or callipers. NOTE Limits should be selected from the specified range until such a time as there is more data available on railway ballast properties related to performance. When required, the particle length of railway ballast shall be determined and the results declared in accordance with the relevant category specified in Table 6. Table 6 — Categories for maximum values of particle length
Percentage by mass with length ≥ 100 mm in a greater than 40 kg sample Particle length category LRB A LRB B LRB C LRB D LRB Declared LRB E ≤ 4 ≤ 6 ≤ 8 ≤ 12 > 12 No requirement
5 Physical requirements 5.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required, the tests specified in Clause 5 shall be carried out to determine appropriate physical properties. NOTE 1 When the value of a property is required but not defined by specified limits the value should be declared as an XXDeclared category, e.g. in Table 7 a Los Angeles coefficient of say 30 corresponds to LARB 30(Declared value). NOTE 2 When a property is not required, a “No requirement” category can be used. NOTE 3 Guidance on selection of appropriate categories for specific applications can be found in national provisions in the place of use of the railway ballast. NOTE 4 Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). 5.2 Resistance to fragmentation 5.2.1 Los Angeles
When required, the resistance to fragmentation of railway ballast, shall be determined in terms of the Los Angeles coefficient as specified in EN 1097-2, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 7.
kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 10 Table 7 — Categories for maximum values of Los Angeles coefficient Los Angeles coefficient Category LARB ≤ 12 ≤ 14 ≤ 16 ≤ 20 ≤ 22 ≤ 24 > 24 LARB 12 LARB 14 LARB 16 LARB 20 LARB 22 LARB 24
LARB Declared No requirement LARB NR
5.2.2 Resistance to impact Where required, the impact value of railway ballast shall be determined in accordance with EN 1097-2, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 8. Table 8 — Categories for maximum values of resistance to impact Impact value % Category SZRB ≤ 14 ≤ 18 ≤ 20 ≤ 22 > 22 SZRB 14 SZRB 18 SZRB 20 SZRB 22
SZRB Declared No requirement SZRB NR
kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 11 5.3 Resistance to wear When required, the resistance to wear of railway ballast shall be determined in accordance with EN 1097-1, using the conditions as specified in Annex A, and the results declared in accordance with the relevant category specified in Table 9. Table 9 — Categories for maximum values of resistance to wear micro-Deval coefficient Category MDE RB ≤ 5 ≤ 7 ≤ 9 ≤ 11 ≤ 13 ≤ 15 > 15 MDE RB 5 MDE RB 7 MDE RB 9 MDE RB 11 MDE RB 13 MDE RB 15
MDE RB Declared No requirement MDE RB NR
5.4 Particle density and water absorption 5.4.1 Particle density When required, the particle density shall be determined in accordance with EN 1097-6 (apparent density) and the results declared. 5.4.2 Water absorption When required, the water absorption shall be determined in accordance with EN 1097-6 depending upon the size of the railway ballast and the results declared. 6 Chemical requirements 6.1 General Railway ballast shall not contain other components or matter than specified in this standard. 6.2 Petrographic description When required, the petrographic description of railway ballast shall be determined and described in accordance with EN 932-3 and the results declared. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 12 7 Durability 7.1 General The necessity for testing and declaring all properties specified in this clause shall be limited according to the particular application at end use or origin of the railway ballast. When required the tests specified in Clause 7 shall be carried out to determine appropriate properties for the durability of railway ballast. NOTE Where conformity with a category is based on a value of a property being less than or equal to a given value, conformity with a more severe category (lower value) automatically confers conformity with all less severe categories (higher values). Similarly for categories based on the value of a property being greater than or equal to a given value, conformity with a more severe (higher value) automatically confers conformity with all less severe categories (lower values). 7.2 Magnesium sulfate soundness When required, the resistance to weathering of railway ballast shall be determined in accordance with the magnesium sulfate soundness test in EN 1367-2, using the conditions as specified in Annex C, and the results declared in accordance with the relevant category specified in Table 10. Table 10 — Categories for maximum magnesium sulfate soundness Magnesium sulfate value Category Percentage loss of mass MSRB
≤ 3 MSRB 3 ≤ 6 MSRB 6 > 6 MSRB Declared No requirement MSRB NR
7.3 Freeze-thaw resistance
7.3.1 Water absorption as a screening test for freez-thaw resistance When required, the water absorption value as a screening test shall be determined in accordance with the procedures specified in EN 1097-6 and the result declared. If the water absorption, determined in accordance with EN 1097-6 (water absorption of railway ballast saturated to constant mass), is not greater than 0,5, the railway ballast shall be assumed to be freeze thaw resistant. If the water absorption, determined in accordance with EN 1097-6 (water absorption of railway ballast saturated to constant mass), is greater than 0,5, then the resistance to freezing and thawing shall be determined in accordance with 7.3.2 or 7.3.3. NOTE With some railway ballast containing a proportion of porous flint aggregate sources the differentiation between satisfactory and unsatisfactory freeze-thaw durability can better assessed by density measurements rather than water absorption. 7.3.2 Resistance to freezing and thawing When required, the resistance to freezing and thawing shall be determined in accordance with EN 1367-1, using the conditions as specified in Annex D, and the results declared in accordance with the relevant category specified in Table 11. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 13 Table 11 — Categories for maximum freeze-thaw resistance values Freeze-thaw Category Percentage loss of mass FRB ≤ 1 FRB 1 ≤ 2 FRB 2 ≤ 4 FRB 4 > 4 FRB Declared No requirement FRB NR
7.3.3 Resistance to freezing and thawing in the presence of salt (extreme conditions) When required (see Note 1), the resistance to freezing and thawing shall be determined in accordance with EN 1367-6 and the results declared in accordance with the relevant category specified in Table 12. In this case, the resistance to freezing and thawing (see 7.3.2.) shall not be determined. NOTE 1 The results of this test provide a means for assessing an aggregate’s resistance to frost weathering in areas where frequent freeze-thaw cycling occurs with seawater sprays or abundant de-icers conditions, and where result values of EN 1367-1 test method do not describe correctly aggregate performance in extreme conditions. NOTE 2 This test has been found to be appropriate for certain petrographic types of aggregate (e.g. basalts) under severe conditions of use and may not be universally applicable to all rock types. Table 12 — Categories for maximum freeze-thaw resistance in the presence of salt
Freeze-thaw Category Percentage loss of mass
FEC RB ≤ 2 FEC RB 2 ≤ 4 FEC RB 4 ≤ 5 FEC RB 5 ≤ 6 FEC RB 6 ≤ 8 FEC RB 8 > 8 F EC RB Declared No requirement FEC RB NR NOTE When tests using de-icing solutions other than NaCl, the limits of Table 12 would not apply.
7.4 Electrical conductivity When required, the electrical conductivity of railway ballast shall be determined.
Requirements for the declaration of the electrical conductivity of railway ballast are currently under development. Until such time as these are finalised attention should be paid to requirements at the place of use. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 14 7.5 Sonnenbrand Where signs of "Sonnenbrand" are known the loss of mass and the resistance to fragmentation shall be determined in accordance with EN 1367-3 and EN 1097-2. NOTE "Sonnenbrand" is a type of rock decay that can be present in some basalts and manifests itself under the influence of atmospheric conditions. It starts with the appearance of grey/white coloured spots. Usually hairline cracks are generated radiating out from the spots and interconnecting them. This reduces the strength of the mineral fabric, and as a result the rock decays to small particles. Depending on the source this process can take place within months of extraction or extend over several decades. In exceptional cases, a rapid decay results in the formation of large cracks and the breaking of aggregate particles. On completion of the boiling test, the loss of mass and the resistance to fragmentation (SBRB SZ or SBRB LA) shall be declared in accordance with the relevant category specified in Table 13.
Table 13 — Categories for maximum values of resistance to “Sonnenbrand” Test Method Result Value Category SBRB Boiling test And either a) Impact test or b) Los Angeles test Loss of mass after boiling
Increase of impact value after boiling
Increase of Los Angeles coefficient after boiling ≤ 1
≤ 3
≤ 5
SBRB SZ
SBRB LA Boiling test And either a) Impact test or b) Los Angeles test Loss of mass after boiling
Increase of impact value after boiling
Increase of Los Angeles coefficient after boiling > 1
> 3
> 5
SBRB SZ Declared SBRB LA Declared No requirement SBRB NR 8 Evaluation of conformity
The producer shall undertake Initial Type Tests and Factory Production Control in accordance with FprEN 16236 to ensure that the product conforms to this European Standard and to declared values as appropriate. 9 Designation
9.1 Designation and description Railway ballast shall be identified in the following terms: a) source and producer - if the material has been re-handled in a depot both source and depot shall be given; in the case of recycled railway ballast, the source / plant / site / track where it has been taken from shall be given; b) a simple indication of the petrographic type (see EN 932-3); c) railway ballast size. kSIST FprEN 13450:2012
FprEN 13450:2012 (E) 15 9.2 Additional information for the description of railway ballast
The necessity for other information depends on the situation and end use, for example: a)
a code to relate the designation to the description; b) any other additional information needed to identify the particular railway ballast. NOTE The producer should be informed at the time of order of any special requirements associated with a particular end use and of requirements for extra information not covered in Table ZA.1a and Table ZA. 1b. 10 Marking and labelling The delivery ticket shall contain at least the following information: a) designation; b) date of despatch; c) serial number of the ticket; d) number of this European Standard. NOTE For CE marking and labelling see ZA.3. kSIST FprEN 13450:2012
FprEN 13450:2012 (
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