prEN 13450-2
(Main)Aggregates for railway ballast - Part 2: Complementary information
Aggregates for railway ballast - Part 2: Complementary information
This document provides non-contradictory complementary information that can be of use when producing or purchasing railway ballast according to the harmonized standard prEN 13450 1:2021.
NOTE prEN 13450 1:2021 is also required to be read in conjunction with the Construction Products Regulation.
Reused railway ballast is not covered by this document.
Gesteinskörnungen für Gleisschotter - Teil 2: Ergänzende Informationen
Dieses Dokument enthält ergänzende nicht widersprechende Angaben, die bei Herstellung oder Erwerb von Gleisschotter nach der harmonisierten Norm prEN 13450 1:2021 von Nutzen sein können.
ANMERKUNG Es ist erforderlich, prEN 13450 1:2021 auch in Zusammenhang mit der Bauproduktenverordnung (CPR, en: construction products regulation) anzuwenden.
Wiederverwendeter Gleisschotter ist nicht Gegenstand dieses Dokuments.
Granulats pour ballasts de voies ferrées - Partie 2: informations complémentaires
Le présent document fournit des informations complémentaires non contradictoires qui peuvent être utiles pour la production ou l’achat de ballast de voie ferrée selon la norme harmonisée prEN 13450 1:2021.
NOTE Le document prEN 13450 1:2021 doit également être lu en parallèle du Règlement sur les produits de construction (RCP).
Le ballast de voie ferrée réutilisé n’est pas couvert dans ce document.
Agregati za grede železniških prog - 2. del: Dopolnilni podatki
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2021
Agregati za grede železniških prog - 2. del: Dopolnilni podatki
Aggregates for railway ballast - Part 2: Complementary information
Gesteinskörnungen für Gleisschotter - Teil 2: Ergänzende Informationen
Granulats pour ballasts de voies ferrées - Partie 2: informations complémentaires
Ta slovenski standard je istoveten z: prEN 13450-2
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 91.100.15; 93.100
English Version
Aggregates for railway ballast - Part 2: Complementary
information
Granulats pour ballasts de voies ferrées - Partie 2: Gesteinskörnungen für Gleisschotter - Teil 2:
informations complémentaires Ergänzende Informationen
This draft European Standard is submitted to CEN members for enquiry. 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, Republic of North Macedonia, Romania, Serbia, 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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13450-2:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope. 4
2 Normative references . 4
3 Terms, definitions, symbols, and abbreviated terms . 4
3.1 Terms and definitions . 4
3.2 Symbols and abbreviated terms . 6
4 Product characteristics – additional information . 6
4.1 General . 6
4.2 Particle size, shape and density. 7
4.2.1 Particle size . 7
4.2.2 Particle shape . 7
4.2.3 Particle density . 8
4.3 Resistance to fragmentation . 9
4.3.1 General . 9
4.3.2 Los Angeles coefficient . 9
4.3.3 Impact value . 9
4.4 Resistance to attrition . 9
4.5 Cleanliness . 9
4.5.1 General . 9
4.5.2 Composition . 9
4.5.3 Content of fines particles . 9
4.5.4 Fines content . 9
4.6 Durability . 10
4.6.1 Water absorption . 10
4.6.2 Resistance to weathering - Magnesium sulfate soundness . 10
4.6.3 Freeze – thaw resistance. 11
4.6.4 “Sonnenbrand” . 11
4.7 Electrical conductivity . 12
5 Sampling and testing methods . 12
6 Assessment and Verification of Constancy of Performance . 12
7 Simplified petrographic description . 13
8 Marking and labelling and packaging . 13
Annex A (informative) Sampling railway ballast at the construction site either from a
railway wagon or from the track . 14
Annex B (informative) Guidance on interpretation of results when samples of railway
ballast have been taken from railway wagon or from track . 17
Bibliography . 18
European foreword
This document (prEN 13450-2:2021) 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 CEN Enquiry.
1 Scope
This document provides non-contradictory complementary information that can be of use when
producing or purchasing railway ballast according to the harmonized standard
prEN 13450-1:2021.
NOTE prEN 13450-1:2021 is also required to be read in conjunction with the Construction Products
Regulation.
Reused railway ballast is not covered by this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
prEN 1097-6:2021, 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
3 Terms, definitions, symbols, and abbreviated terms
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1 Terms and definitions
3.1.1
aggregate
granular material of natural, manufactured or recycled origin used in construction
3.1.2
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 (superstructure) of railway track
3.1.3
natural railway ballast
aggregate for railway ballast from mineral sources that has 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.
3.1.4
recycled railway ballast
railway ballast resulting from the processing of inorganic mineral material previously used as
railway ballast in the upper layer (superstructure) of the railway track
Note 1 to entry: Railway ballast resulting of previously used railway ballast on site and without putting
it on the market (reused railway ballast) is not covered by this document.
3.1.5
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).
3.1.6
grading
particle size distribution expressed as the percentages by mass passing a specified set of sieves
3.1.7
fine particles
particle size fraction of railway ballast which passes the 0,5 mm sieve
3.1.8
fines
particle size fraction of an aggregate that passes the 0,063 mm sieve
3.1.9
coarse aggregate
designation given to the larger aggregate sizes with D greater than 4 mm and d greater than or
equal to 1 mm
3.1.10
particle size fraction
fraction of an aggregate passing the larger of two sieves and retained on the smaller
Note 1 to entry: The lower limit can be zero.
3.1.11
oversize
part of the aggregate retained on the upper of the limiting sieves used in aggregate size
description
3.1.12
undersize
part of the aggregate passing the lower of the limiting sieves used in aggregate size description
3.1.13
product family
group of products produced by one manufacturer for which the assessment results for one or
more characteristics from any one product within the range are valid for all other products within
this range
3.2 Symbols and abbreviated terms
For the purposes of this document, the following symbols and abbreviations apply:
Symbol/Acronym Meaning
AVCP Assessment and Verification of Constancy of Performance
C (Percentage of) Crushed particles
DoP Declaration of performance
d lower sieve size designation in mm
D upper sieve size designation in mm
d/D Aggregate size designation
D/d Ratio of upper to lower sieve size
f Fines content
F Freeze thaw resistance
RB
F Freeze thaw resistance in the presence of salt (extreme conditions)
EC
FI Flakiness Index
G Grading
CRB
G Content of fine particles
FRB
L Length
RB
LA Los Angeles coefficient
RB
M Micro-Deval coefficient
DERB
MS Magnesium Sulfate soundness
RB
NaCl Sodium Chloride
SI Shape Index
SZ Impact value
RB
NOTE The subindex RB stands for Railway Ballast and is used when the general test method is
particularised for it. Subindex CRB stands for Coarse Railway Ballast and subindex FRB stands for Fine
Railway Ballast
4 Product characteristics – additional information
4.1 General
The testing and declaration of any characteristic included in prEN 13450-1:2021, Clause 4 is at
the choice of the manufacturer of the railway ballast. In practice, the manufacturer will:
a) test and declare those characteristics of relevance to the particular end use or to the origin
of production of the railway ballast.
b) identify classes for any given characteristic which may be more appropriate for specific end
uses.
NOTE 1 Under the Construction Products Regulation, there is only a requirement to declare a single
characteristic.
To complement the information given in prEN 13450-1:2021, Annex ZA, it is indicated in this
clause which classes of characteristics may be applicable to each major group of end uses.
However, it should be cautioned that not all of these classes will be suitable for every type of
application or mixture/product in the end-use.
Wher
...
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