Tests for geometrical properties of aggregates - Part 8: Assessment of fines - Sand equivalent test

This European Standard describes the reference method used for type testing and in case of dispute for the determination of the sand equivalent value of 0/2 mm fraction (for 0/4 mm, see Annex A) in fine aggregates or all-in 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.

Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 8: Beurteilung von Feinanteilen - Sandäquivalent-Verfahren

Diese Europäische Norm legt das Referenzverfahren, das für die Erstprüfung und im Streitfall für die Bestimmung des Sandäquivalent-Werts für die Kornklasse 0/2 mm (für 0/4 mm, siehe Anhang A) in feinen Gesteinskörnungen angewendet wird fest. Für andere Zwecke, speziell im Rahmen der werkseigenen Produk¬tionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 8 : Évaluation des fines - Équivalent de sable

La présente norme européenne décrit la méthode de référence utilisée pour les essais de type initiaux ainsi qu’en cas de litige dans le but de déterminer l’équivalent de sable de la fraction 0/2 mm (pour 0/4 mm, voir l’Annexe A) des sables et des graves. À d’autres fins, en particulier pour la maîtrise de la production des granulats, d’autres méthodes peuvent être utilisées à condition qu’il existe une relation entre ces dernières et la méthode de référence.

Preskusi geometričnih lastnosti agregatov - 8. del: Ugotavljanje finih delcev - Ekvivalent peska

Ta evropski standard opisuje referenčno metodo, ki se uporablja za tipsko preskušanje in v primeru spora za ugotavljanje vrednosti ekvivalenta peska deleža 0/2 mm (za 0/4 mm glejte Dodatek A) v finih agregatih ali nesepariranih agregatih. Za druge namene, zlasti za nadzor proizvodnje v obratu, se lahko uporabijo druge metode, če obstaja primerna delovna povezava z referenčno metodo.

General Information

Status
Published
Publication Date
12-May-2015
Technical Committee
Current Stage
9093 - Decision to confirm - Review Enquiry
Due Date
02-Sep-2017
Completion Date
05-Sep-2017

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SLOVENSKI STANDARD
SIST EN 933-8:2012+A1:2015
01-september-2015
1DGRPHãþD
SIST EN 933-8:2012
3UHVNXVLJHRPHWULþQLKODVWQRVWLDJUHJDWRYGHO8JRWDYOMDQMHILQLKGHOFHY
(NYLYDOHQWSHVND

Tests for geometrical properties of aggregates - Part 8: Assessment of fines - Sand

equivalent test
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 8:
Beurteilung von Feinanteilen - Sandäquivalent-Verfahren

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 8 :

Évaluation des fines - Équivalent de sable
Ta slovenski standard je istoveten z: EN 933-8:2012+A1:2015
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
SIST EN 933-8:2012+A1:2015 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 933-8:2012+A1:2015
---------------------- Page: 2 ----------------------
SIST EN 933-8:2012+A1:2015
EUROPEAN STANDARD
EN 933-8:2012+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 91.100.15 Supersedes EN 933-8:2012
English Version
Tests for geometrical properties of aggregates - Part 8:
Assessment of fines - Sand equivalent test

Essais pour déterminer les caractéristiques géométriques Prüfverfahren für geometrische Eigenschaften von

des granulats - Partie 8 : Évaluation des fines - Équivalent Gesteinskörnungen - Teil 8: Beurteilung von Feinanteilen -

de sable Sandäquivalent-Verfahren

This European Standard was approved by CEN on 6 November 2011 and includes Amendment 1 approved by CEN on 20 April 2015.

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
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 933-8:2012+A1:2015 E

worldwide for CEN national Members.
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SIST EN 933-8:2012+A1:2015
EN 933-8:2012+A1:2015 (E)
Contents Page

Foreword ................................................................................................................................................. 3

1 Scope.......................................................................................................................................... 5

2 Normative references ............................................................................................................... 5

3 Terms and definitions ............................................................................................................... 5

4 Principle ..................................................................................................................................... 6

5 Reagents .................................................................................................................................... 6

6 Apparatus .................................................................................................................................. 6

7 Preparation of test specimens ............................................................................................... 12

7.1 General ..................................................................................................................................... 12

7.2 First subsample ....................................................................................................................... 12

7.3 Second subsample ................................................................................................................. 12

8 Procedure ................................................................................................................................ 13

8.1 General ..................................................................................................................................... 13

8.2 Filling of the graduated cylinders ......................................................................................... 13

8.3 Shaking the graduated cylinders .......................................................................................... 14

8.4 Washing ................................................................................................................................... 14

8.5 Measurements ......................................................................................................................... 15

9 Calculation and expression of results .................................................................................. 16

10 Test report ............................................................................................................................... 17

10.1 Required data .......................................................................................................................... 17

10.2 Optional data ........................................................................................................................... 17

Annex A (normative) Procedure for the determination of the sand equivalent value of the

0/4 mm fraction ........................................................................................................................ 18

Annex B (informative) Example of a test data sheet ......................................................................... 19

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SIST EN 933-8:2012+A1:2015
EN 933-8:2012+A1:2015 (E)
Foreword

This document (EN 933-8:2012+A1:2015) 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 2015, and conflicting national standards

shall be withdrawn at the latest by November 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 933-8:2012".
This document includes Amendment 1 approved by CEN on 2015-04-19.

The start and finish of text introduced or altered by amendment is indicated in the text by tags !".

This revised standard differs from EN 933-8:1999 for 0/2 mm size aggregates where the fines content

was not limited to 10 %.

This European Standard is one of a series of standards for tests for geometrical properties of

aggregates. Test methods for other properties of aggregates are covered by the following European

Standards:
— EN 932, Tests for general properties of aggregates;
— EN 1097, Tests for mechanical and physical properties of aggregates;
— EN 1367, Tests for thermal and weathering properties of aggregates;
— EN 1744, Tests for chemical properties of aggregates;
— EN 13179, Tests for filler aggregate used in bituminous mixtures.

The other parts of EN 933, Tests for geometrical properties of aggregates, will be:

— 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 in coarse aggregates;

— Part 9: Assessment of fines — Methylene blue test;
— Part 10: Assessment of fines — Grading of filler aggregates (air jet sieving);
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SIST EN 933-8:2012+A1:2015
EN 933-8:2012+A1:2015 (E)

— 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, 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.
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SIST EN 933-8:2012+A1:2015
EN 933-8:2012+A1:2015 (E)
1 Scope

This European Standard describes the reference method used for type testing and in case of dispute

for the determination of the sand equivalent value of 0/2 mm fraction (for 0/4 mm, see Annex A) in fine

aggregates or all-in 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.
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 933-1, Tests for geometrical properties of aggregates ― Part 1: Determination of particle size

distribution ― Sieving method

EN 933-2, Tests for geometrical properties of aggregates ― Part 2: Determination of particle size

distribution ― Test sieves, nominal size of apertures

EN 1097-5, Tests for mechanical and physical properties of aggregates ― Part 5: Determination of

the water content by drying in a ventilated oven
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
fines
particle size fraction of an aggregate which passes the 0,063 mm sieve
3.2
laboratory sample
sample intended for laboratory testing
3.3
particle size fraction (d /D )
i i

fraction of an aggregate passing the larger (D ) of two sieves and retained on the smaller (d )

i i
NOTE The lower limit d may be zero.
3.4
subsample
sample obtained by means of a sample reduction procedure
3.5
test portion
sample used as a whole in a single test
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SIST EN 933-8:2012+A1:2015
EN 933-8:2012+A1:2015 (E)
3.6
test specimen

sample used in a single determination when a test method requires more than one determination of a

property
4 Principle

A 0/2 mm test specimen of aggregate with a maximum fines content of 10 % (either natural or

obtained after grading curve adjustment) and a small quantity of washing and flocculating solution are

poured into a graduated cylinder and are agitated to loosen the clay coatings from the coarser

particles in the test portion. The aggregate is then ‘irrigated’ using additional washing and flocculating

solution forcing the fine particles into suspension. After a fixed time, the sand equivalent value

(SE(10)) is calculated as the height of sediment expressed as a percentage of the total height of

sediment and suspension in the cylinder.
5 Reagents
5.1 Concentrated solution, made up of:

a) crystalline calcium chloride, CaCl .6H O or anhydrous calcium chloride, CaCl ;

2 2 2
b) glycerine, 99 % glycerol, laboratory reagent quality;
c) formaldehyde solution, 40 % by volume, laboratory reagent quality;
d) distilled or demineralised water.

Dissolve (219 ± 2) g of crystalline calcium chloride in (350 ± 50) ml of distilled or demineralised water,

cool to room temperature and if necessary filter through a medium or coarse grade filter paper. Add

(480 ± 5) g of glycerine and (12,5 ± 0,5) g of formaldehyde solution and dilute to 1 l of solution with

distilled or demineralised water and mix thoroughly.

NOTE 1 219 g CaCl .6H 0 6H O is equivalent to 111 g anhydrous calcium chloride CaCl .

2 2 2 2

NOTE 2 It is recommended that the concentrated solution is stored protected from light in glass or plastics

flasks containing (125 ± 1) ml.

NOTE 3 Sodium hypochlorite (bleach) with 2,6 % active chloride can be used instead of formaldehyde. In

case of dispute, use formaldehyde.

5.2 Washing and flocculating solution, prepared by diluting (125 ± 1) ml concentrated

solution (5.1) to (5,00 ± 0,01) l using distilled or demineralised water.
NOTE In preparing the washing solution, the concent
...

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