Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method

This European Standard describes the reference washing and dry sieving method used for type testing and in case of dispute, for determination of the particle size distribution of aggregates. For other purposes, in particular factory production control, other methods may be used, provided that an appropriate working relationship with the reference method has been established. It applies to all aggregates, including lightweight aggregates, up to 90 mm nominal size, but excluding filler.
NOTE 1   The determination of the grading of fillers is specified in EN 933-10 Assessment of fines — Grading of filler aggregates (air jet sieving).
NOTE 2   Dry sieving without washing may be used for aggregates free from particles which cause agglomeration.

Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 1: Bestimmung der Korngrößenverteilung - Siebverfahren

Diese Europäische Norm beschreibt das Referenzverfahren für Waschen und Trockensiebung, das für die Erstprüfung und im Streitfall für die Bestimmung der Korngrößenverteilung von Gesteinskörnungen ange-wendet wird. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde. Das Verfahren gilt für alle Gesteinskörnungen, eingeschlossen leichte Gesteinskörnungen bis zu einer Nennkorngröße von 90 mm. Das Verfahren gilt nicht für Füller.
ANMERKUNG 1   Die Bestimmung der Kornverteilung von Füller ist in EN 933 10, Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen — Teil 10: Beurteilung von Feinanteilen — Kornverteilung von Füller (Luftstrahl-siebung), festgelegt.
ANMERKUNG 2   Trockensiebung ohne Waschen darf für Gesteinskörnungen angewendet werden, die frei von zu Agglomeration neigenden Bestandteilen sind.

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 1 : Détermination de la granularité - Analyse granulométrique par tamisage

La présente Norme européenne décrit la méthode de référence servant au tamisage par voie sèche et au lavage utilisée pour les essais de type initiaux et, en cas de désaccord, à la détermination de la granularité des granulats. Pour les besoins du contrôle de la production en usine en particulier, d’autres méthodes peuvent être utilisées sous réserve qu’une corrélation appropriée avec la méthode de référence ait été établie. Elle s'applique à tous les granulats, dont les granulats légers, jusqu’à une taille nominale de 90mm, mais en excluant les fillers.
NOTE 1   La détermination de la granularité des fillers sera spécifiée dans l''EN 933-10 Essais sur les fines - Granularité des fillers (tamisage au jet d'air).
NOTE 2   Le tamisage par voie sèche sans lavage peut également s’avérer une méthode alternative, pouvant être utilisée pour les granulats exempts de particules causant une agglomération.

Preskusi geometričnih lastnosti agregatov - 1. del: Ugotavljanje zrnavosti - Metoda sejanja

Ta evropski standard opisuje referenčno metodo pranja in suhega sejanja, ki se uporablja za tipsko preskušanje in v primeru spora za ugotavljanje zrnavosti agregatov. Za druge namene, zlasti za kontrolo proizvodnje v obratu, se lahko uporabijo druge metode, če obstaja primerna delovna povezava z referenčno metodo. Uporablja se za vse agregate, pri čemer je polnilo izključeno.
OPOMBA 1: Ugotavljanje zrnavosti polnil je opredeljeno v standardu EN 933-10 Ugotavljanje finih delcev – Zrnavost kamene moke (sejanje z zračnim curkom).
OPOMBA 2: Suho sejanje brez pranja se lahko uporablja za agregate brez zrn, ki povzročajo aglomeracijo.

General Information

Status
Published
Publication Date
10-Jan-2012
Technical Committee
Current Stage
9093 - Decision to confirm - Review Enquiry

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VHMDQMDPrüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 1: Bestimmung der Korngrößenverteilung SiebverfahrenEssais pour déterminer les caractéristiques géométriques des granulats - Partie 1: Détermination de la granularité - Analyse granulométrique par tamisageTests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 933-1:2012SIST EN 933-1:2012en,fr,de01-maj-2012SIST EN 933-1:2012SLOVENSKI

STANDARDSIST EN 933-1:1999/A1:2005SIST EN 933-1:19991DGRPHãþD
SIST EN 933-1:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 933-1
January 2012 ICS 91.100.15 Supersedes EN 933-1:1997English Version

Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 1: Détermination de la granularité - Analyse granulométrique par tamisage

Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 1: Bestimmung der Korngrößenverteilung - Siebverfahren This European Standard was approved by CEN on 29 October 2011.

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, 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 © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 933-1:2012: ESIST EN 933-1:2012

EN 933-1:2012 (E) 2 Contents Page Foreword ................................................................................................................................................. 31 Scope.......................................................................................................................................... 42 Normative references ............................................................................................................... 43 Terms and definitions ............................................................................................................... 44 Principle ..................................................................................................................................... 55 Apparatus .................................................................................................................................. 56 Preparation of test portions ..................................................................................................... 57 Procedure .................................................................................................................................. 67.1 Washing ..................................................................................................................................... 67.2 Sieving........................................................................................................................................ 77.3 Weighing .................................................................................................................................... 88 Calculation and expression of results .................................................................................... 88.1 Calculations ............................................................................................................................... 88.2 Validating the results ................................................................................................................ 88.3 Precision .................................................................................................................................... 99 Test report ................................................................................................................................. 99.1 Required data ............................................................................................................................ 99.2 Optional data ............................................................................................................................. 9Annex A (normative)

Alternative test method for all-in aggregate with D ≥≥≥≥ 31,5 mm ................... 11A.1 Principle ................................................................................................................................... 11A.2 Apparatus ................................................................................................................................ 11A.3 Procedure ................................................................................................................................ 11A.3.1 Preparation of the initial test portion .................................................................................... 11A.3.2 First washing stage – particles retained on the 16 mm size test sieve ............................. 12A.3.3 First dry sieving stage – particles retained on the 16 mm size test sieve ........................ 12A.3.4 Preparation stage – dry subsample passing the 16 mm size test sieve ........................... 12A.3.5 Second washing stage – reduced subsample passing the 16 mm size test sieve ............. 12A.3.6 Second dry sieving stage – reduced subsample passing the 16 mm size test sieve ...... 12A.4 Calculation and expression of results .................................................................................. 13A.4.1 Original dry mass .................................................................................................................... 13A.4.2 Mass retained on the sieves at the first dry sieving stage ................................................. 13A.4.3 Mass retained on the sieves at the second dry sieving stage ........................................... 13A.4.4 Mass of fines passing the 0,063 mm sieve ........................................................................... 13A.4.5 Particle size distribution......................................................................................................... 14A.4.6 Validating the results .............................................................................................................. 14Annex B (normative)

Test method for aggregates unsuitable for oven-drying ............................. 15Annex C (informative)

Example of test data sheet ............................................................................ 16Annex D (informative)

Graphical presentation of results ................................................................. 17Bibliography ......................................................................................................................................... 18 SIST EN 933-1:2012

EN 933-1:2012 (E) 3 Foreword This document (EN 933-1:2012) 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 July 2012, and conflicting national standards shall be withdrawn at the latest by July 2012. 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 933-1:1997. EN 933 — Tests for geometrical properties of aggregates, consists of the following parts:

Part 1: Determination of particle size distribution — Sieving method;  Part 2: Determination of particle size distribution — Test sieves, nominal size of apertures;  Part 3: Determination of particle shape — Flakiness index;  Part 4: Determination of particle shape — Shape index;  Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles;  Part 6: Assessment of surface characteristics — Flow coefficient of aggregates;  Part 7: Determination of shell content — Percentage of shells for coarse aggregates;  Part 8: Assessment of fines — Sand equivalent test;  Part 9: Assessment of fines — Methylene blue test;  Part 10: Assessment of fines — Grading of filler aggregates (air jet sieving);  Part 11: Classification test for the constituents of coarse recycled aggregate. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 933-1:2012

EN 933-1:2012 (E) 4 1 Scope This European Standard describes the reference washing and dry sieving method used for type testing and in case of dispute, for determination of the particle size distribution of aggregates. For other purposes, in particular factory production control, other methods may be used, provided that an appropriate working relationship with the reference method has been established. It applies to all aggregates, including lightweight aggregates, up to 90 mm nominal size, but excluding filler.

NOTE 1 The determination of the grading of fillers is specified in EN 933-10 Assessment of fines — Grading of filler aggregates (air jet sieving). NOTE 2 Dry sieving without washing may be used for aggregates free from particles which cause agglomeration. 2 Normative references The following referenced documents are indispensable for the application 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. EN 932-2, Tests for general properties of aggregates — Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates — Part 5: Common equipment and calibration EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size distribution — Test sieves, nominal size of apertures ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated metal plate 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aggregate granular material used in construction which may be natural, manufactured or recycled 3.2 test portion sample used as a whole in a single test 3.3 constant mass mass determined by successive weighings performed at least 1 h apart and not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven (see 5.3) at (110 ± 5) ºC. Test laboratories may determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. SIST EN 933-1:2012

EN 933-1:2012 (E) 5 4 Principle The test consists of dividing and separating a material into several particle size classifications of decreasing sizes by means of a series of sieves,. The aperture sizes and the number of sieves are selected in accordance with the nature of the sample and the accuracy required. The method adopted is washing and dry sieving. When washing can alter the physical properties of a lightweight aggregate, dry sieving shall be used and the procedure specified in 7.1 shall not be applied. The mass of the particles retained on the various sieves is related to the initial mass of the material. The cumulative percentages passing each sieve are reported in numerical form and, when required, in graphical form (see Annex D). 5 Apparatus Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5. 5.1 Test sieves, with apertures as specified in EN 933-2 and conforming to the requirements of ISO 3310-1 and ISO 3310-2. 5.2 Tightly fitting pan and lid, for the sieves. 5.3 Ventilated oven, thermostatically controlled to maintain a temperature of (110 ± 5) ºC, or other suitable equipment for drying the aggregates, if it does not cause any particle size breakdown. 5.4 Washing equipment. 5.5 Balances or scales, accurate to ± 0,1 % of test portion mass. 5.6 Trays, brushes. 5.7 Sieving machine, (optional). 6 Preparation of test portions Samples shall be reduced in accordance with EN 932-2 to produce the required number of test portions. NOTE It may be necessary to moisten samples containing substantial amounts of fines before reduction to minimise segregation and loss of dust. The size of each test portion shall be as specified in Table 1. SIST EN 933-1:2012

EN 933-1:2012 (E) 6 Table 1 — Minimum size of test portions

Aggregate size D mass of aggregates volume of lightweight aggregates (litres) (maximum) mm kg

90 80 - 32 10 2,1 16 2,6 1,7 8 0,6 0,8 ≤ 4 0,2 0,3 NOTE 1 For aggregates of other sizes below 90 mm, the minimum test portion mass may be interpolated from the masses given in Table 1 using the following formulae: M = (D/10)2 where M = minimum mass of test portion in kg

D = aggregate size in mm NOTE 2 The precision of the test method may be reduced if the test portion size is less than the value in Table 1. In such a case, the test portion size should be stated in the test report (9.2). NOTE 3 For aggregates of particle density higher than 3,00 Mg/m3 (see EN 1097-6), an appropriate correction should be applied to the test portion masses given in Table 1 based on the density ratio, in order to produce a test portion of approximately the same volume as those for aggregates of normal density. NOTE 4 For lightweight aggregates complying with EN 13055, use the volume column to choose the appropriate minimum size of test portions. The volumes for other aggregate sizes may be interpolated.

Sample reduction shall yield a test portion of size larger than the minimum but not of an exact predetermined value. Dry the test portion by heating at a temperature of (110 ± 5) ºC to constant mass. Allow to cool, weigh and record the mass as M1. For some types of aggregate, drying at 110 ºC binds particles together sufficiently strongly to prevent separation of single particles during subsequent washing and/or sieving procedures. For such aggregates the procedure given in Annex B shall be adopted. For all-in aggregates with D equal to 31,5 mm or larger, the procedure described in Annex A may be used. 7 Procedure 7.1 Washing Place the test portion in a container and add sufficient water to cover the test portion. NOTE 1 A storage period of 24 h under water is helpful in breaking down lumps. A dispersion agent may be used. Agitate the sample with sufficient vigour to result in complete separation and suspension of the fines. Wet both sides of a 0,063 mm sieve reserved for use in this test only, and fit a guard sieve (e.g. 1 mm or 2 mm) on top. Mount the sieves in such a way that the suspension passing the test sieve can be run to S

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