Tests for geometrical properties of aggregates - Part 5: Determination of percentage of crushed particles in coarse and all-in natural aggregates

This document specifies the reference method, used for type testing and in case of dispute, for the determination of the percentages of crushed particles, totally crushed particles and totally rounded particles in a sample of natural coarse aggregate or all-in aggregate. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the reference method has been established.
NOTE 1   Examples of advanced test methods can be found in the Bibliography.
This document applies to gravel or to a mixture of natural coarse aggregates containing gravel. The test method specified is applicable to particle sizes between 4 mm and 63 mm.
NOTE 2   For coarse aggregate between 4 mm and 20 mm, the percentages of crushed surfaces are linked to the flow coefficient and can therefore be used in association with the test method specified in EN 933-6.
Subclause 7.1 specifies the procedure for test portions consisting of one particle size fraction and Subclause 7.2 specifies the procedure for test portions consisting of two or more particle size fractions.
Guidance for estimated mass of the test portion is given in informative Annex A.
Examples of application of the test procedure and an example of a test data sheet are given in informative Annexes B and C.

Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 5: Bestimmung des prozentualen Anteils an gebrochenen Körnern in groben Gesteinskörnungen und Gesteinskörnungsgemischen

Dieses Dokument legt das für die Erstprüfung und im Streitfall anzuwendende Referenzverfahren für die Bestimmung des prozentualen Anteils an gebrochenen Körnern, vollständig gebrochenen Körnern und vollständig gerundeten Körnern in einer Probe natürlicher grober Gesteinskörnung oder Gesteinskörnungs¬gemisch fest. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, können andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.
ANMERKUNG 1   Beispiele für erweiterte Prüfverfahren können in den Literaturhinweisen gefunden werden.
Das vorliegende Dokument gilt für Kies oder ein Gemisch aus natürlicher grober Gesteinskörnung, das Kies enthält. Das festgelegte Prüfverfahren ist bei Korngrößen zwischen 4 mm und 63 mm anwendbar.
ANMERKUNG 2   Bei einer groben Gesteinskörnung zwischen 4 mm und 20 mm hängt der Prozentsatz an gebrochenen Oberflächen mit dem Fließkoeffizienten zusammen und kann deshalb als alternatives Prüfverfahren zu dem in EN 933 6 beschriebenen Verfahren angewendet werden.
In 7.1 wird das Verfahren für Messproben, die aus einer Kornklasse bestehen, und in 7.2 das Verfahren für Messproben, die aus zwei oder mehr Kornklassen bestehen, festgelegt.
Leitlinien für die geschätzte Masse der Messprobe werden im informativen Anhang A gegeben.
Beispiele für die Anwendung des Prüfverfahrens und ein Beispiel eines Prüf-Datenblattes werden im informativen Anhang B und im informativen Anhang C aufgeführt.

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 5 : Détermination du pourcentage de surfaces cassées dans les gravillons et graves naturelles

Le présent document spécifie la méthode de référence, utilisée pour les essais de type et en cas de litige, pour la détermination des pourcentages de grains semi-concassés, de grains entièrement concassés et de grains entièrement roulés dans un échantillon de gravillons et de graves naturels. D’autres méthodes peuvent être utilisées à d’autres fins, telles que le contrôle de la production en usine, à condition qu’une relation de travail appropriée ait été établie avec la méthode de référence.
NOTE 1   Des exemples de méthodes d’essai avancées sont présentés dans la Bibliographie.
Le présent document s’applique au gravier ou à un mélange de gravillons naturels contenant du gravier. La méthode d’essai spécifiée est applicable aux grains dont la taille est comprise entre 4 mm et 63 mm.
NOTE 2   Pour les gravillons de taille comprise entre 4 mm et 20 mm, les pourcentages de surfaces cassées sont liés au coefficient d’écoulement et peuvent donc être utilisés en association avec la méthode d’essai spécifiée dans l’EN 933-6.
L’article 7.1 spécifie le mode opératoire pour les prises d’essai constituées d’un classe granulaire et l’article 7.2 spécifie le mode opératoire pour les prises d’essai constituées d’au moins deux classes granulaires.
Des indications sur la masse estimée de la prise d’essai sont données dans l’Annexe A informative.
Des exemples d’application du mode opératoire d’essai et un exemple de feuille d’essai sont donnés dans les Annexes B et C informatives.

Preskusi geometričnih lastnosti agregatov - 5. del: Določevanje odstotka lomljenih površin zrn grobega in mešanega agregata

General Information

Status
Published
Public Enquiry End Date
14-Jan-2021
Publication Date
11-Jan-2023
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Jan-2023
Due Date
16-Mar-2023
Completion Date
12-Jan-2023

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SLOVENSKI STANDARD
SIST EN 933-5:2023
01-februar-2023
Nadomešča:
SIST EN 933-5:1999
SIST EN 933-5:1999/A1:2005

Preskusi geometričnih lastnosti agregatov - 5. del: Določevanje odstotka lomljenih

površin zrn grobega in mešanega agregata

Tests for geometrical properties of aggregates - Part 5: Determination of percentage of

crushed particles in coarse and all-in natural aggregates
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 5:
Bestimmung des prozentualen Anteils an gebrochenen Körnern in groben
Gesteinskörnungen und Gesteinskörnungsgemischen

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 5 :

Détermination du pourcentage de surfaces cassées dans les gravillons et graves
naturelles
Ta slovenski standard je istoveten z: EN 933-5:2022
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
SIST EN 933-5:2023 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN 933-5:2023
---------------------- Page: 2 ----------------------
SIST EN 933-5:2023
EN 933-5
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 91.100.15 Supersedes EN 933-5:1998
English Version
Tests for geometrical properties of aggregates - Part 5:
Determination of percentage of crushed particles in coarse
and all-in natural aggregates

Essais pour déterminer les caractéristiques Prüfverfahren für geometrische Eigenschaften von

géométriques des granulats - Partie 5 : Détermination Gesteinskörnungen - Teil 5: Bestimmung des

du pourcentage de surfaces cassées dans les gravillons prozentualen Anteils an gebrochenen Körnern in

et cailloux groben Gesteinskörnungen und
Gesteinskörnungsgemischen
This European Standard was approved by CEN on 26 September 2022.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 933-5:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 933-5:2023
EN 933-5:2022(E)
Contents Page

European foreword ....................................................................................................................................................... 3

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

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

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

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

5 Apparatus ........................................................................................................................................................... 7

6 Preparation of test portion .......................................................................................................................... 7

7 Procedure........................................................................................................................................................... 8

7.1 Test portions consisting of one size fraction where D ≤ 2d .......................................................... 8

0 0

7.2 Test portions consisting of two or more size fractions ..................................................................... 8

8 Calculation and expression of results ...................................................................................................... 9

8.1 Test portions consisting of one size fraction ........................................................................................ 9

8.2 Test portions consisting of two or more size fractions .................................................................. 10

9 Test report ...................................................................................................................................................... 10

9.1 Required data ................................................................................................................................................ 10

9.2 Optional data ................................................................................................................................................. 11

Annex A (informative) Guidance for estimated mass of various size fractions containing

about 100 particles for aggregates with an oven-dried particle density of 2,65 Mg/m ... 12

Annex B (informative) Examples of application of the test procedure .................................................... 14

B.1 Test portion consisting of one size fraction........................................................................................ 14

B.1.1 Preparation of test portion ....................................................................................................................... 14

B.1.2 Assessment of C , C and C ....................................................................................................................... 14

tc c tr

B.1.3 Report ............................................................................................................................................................... 15

B.2 Test portion consisting of two or more size fractions .................................................................... 15

B.2.1 Preparation of test portion ....................................................................................................................... 15

B.2.2 Assessment of C , C and C ....................................................................................................................... 16

tc c tr

B.2.3 Report ............................................................................................................................................................... 17

Annex C (informative) Example of a test data sheet for a test portion consisting of one size

fraction ............................................................................................................................................................. 18

C.1 General ............................................................................................................................................................. 18

C.2 Preparation of test portion d /D where D ≤ 2d ............................................................................ 18

0 0 0 0

C.3 Sorting of particles in the test portion and subsequent calculation and expression of

results ............................................................................................................................................................... 19

Bibliography ................................................................................................................................................................. 20

---------------------- Page: 4 ----------------------
SIST EN 933-5:2023
EN 933-5:2022 (E)
European foreword

This document (EN 933-5:2022) 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 May 2023, and conflicting national standards shall be

withdrawn at the latest by May 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 933-5:1998.

This document has been prepared under a Standardization Request given to CEN by the European

Commission and the European Free Trade Association.

In comparison with the previous edition, the following technical modifications have been made:

a) The title has been revised to better reflect the scope;

b) Clause 1: Scope has been clarified to show that the standard applies to coarse and all-in natural

aggregates, but not to lightweight aggregates.

c) Clause 3: The definition of a crushed surface has been changed. The definitions of aggregate size and

a rounded particle have been deleted. The definition of a rounded surface has been added;

d) Clause 4: Principle has been amended;

e) Clause 5: Coloured pencil has been added as optional apparatus to facilitate the procedure of

estimating crushed and rounded parts of a particle surface;
f) Clause 6: Preparation of test portion has been revised;

g) Clause 7: Procedure has been amended and an illustrating figure has been added;

h) Clause 8: Calculation and expression of results has been amended;
i) Clause 9: The lists of required and optional data have been updated;

j) New informative Annex A, with guidance for estimated mass of various size fractions with about 100

particles, has been added;

k) New informative Annex B, with example of application of the test procedure, has been added;

l) Previous Annex A, with example of a test data sheet, has been revised and moved to Annex C.

This document forms part of a series of tests for geometrical properties of aggregates. Test methods for

other properties of aggregates are covered by the following European Standards:
— EN 932 (all parts), Tests for general properties of aggregates

— EN 1097 (all parts), Tests for mechanical and physical properties of aggregates

---------------------- Page: 5 ----------------------
SIST EN 933-5:2023
EN 933-5:2022 (E)
— EN 1367 (all parts), Tests for thermal and weathering properties of aggregates
— EN 1744 (all parts), Tests for chemical properties of aggregates
— EN 13179 (all parts), Tests for filler aggregate used in bituminous mixtures
The other parts of the EN 933 series include:
— 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 6: Assessment of surface characteristics - Flow coefficient of aggregates

— Part 7: Determination of shell content - Percentage of shells in 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

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

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, 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, Türkiye and the United

Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 933-5:2023
EN 933-5:2022 (E)
1 Scope

This document specifies the reference method, used for type testing and in case of dispute, for the

determination of the percentages of crushed particles, totally crushed particles and totally rounded

particles in coarse and all-in natural aggregates. Other methods can be used for other purposes, such as

factory production control, provided that an appropriate working relationship with the reference method

has been established.
NOTE 1 Examples of advanced test methods can be found in the Bibliography.

This document applies to coarse aggregates comprising particles within size fraction 4/63 mm. It does

not apply to lightweight aggregates.

NOTE 2 For coarse aggregate between 4 mm and 20 mm the percentages of crushed surfaces are linked to the

flow coefficient and can therefore be used in association with the test method specified in EN 933-6.

Clause 7.1 specifies the procedure for test portions consisting of one size fraction and Clause 7.2 specifies

the procedure for test portions consisting of two or more size fractions.

Guidance for the estimated mass of various size fractions with about 100 particles is given in informative

Annex A.

Examples of application of the test procedure and an example of a test data sheet are given in informative

Annexes B and C.
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.

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
3 Terms and definitions
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/ui
— IEC Electropedia: available at https://www.electropedia.org/
3.1
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
---------------------- Page: 7 ----------------------
SIST EN 933-5:2023
EN 933-5:2022 (E)
3.2
test portion
d /D
0 0
sample used as a whole in a single test
3.3
constant mass

mass determined after successive weighings at least 1 h apart not differing by more than 0,1 %

Note 1 to entry: In many cases constant mass can be achieved after a test portion has been dried for a pre-

determined period in a specified oven at (110 ± 5) °C. Test laboratories can determine the time required to achieve

constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used.

3.4
crushed surface

surface of a particle with angular fractured planar faces and often distinct corners and edges

Note 1 to entry: The crushed surface is usually produced by mechanical processing, but it can also consist of the

original surface of a gravel particle, formed by geological action (breaking without any subsequent significant wear

and weathering of the gravel particle).
3.5
totally crushed particle
particle with more than 90 % of its surface crushed (tc)
3.6
crushed particle
particle with more than 50 % of its surface crushed (c)
3.7
rounded surface

surface of a particle which does not conform to the definition of crushed surface in 3.5

3.8
totally rounded particle
particle with more than 90 % of its surface rounded (tr)
4 Principle

The test consists of sorting by hand a coarse test portion of natural aggregates into crushed particles,

totally crushed particles and totally rounded particles.

The masses of crushed particles, totally crushed particles and totally rounded particles are determined

and expressed as percentages of the test portion mass.
---------------------- Page: 8 ----------------------
SIST EN 933-5:2023
EN 933-5:2022 (E)
5 Apparatus

Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5.

5.1 Test sieves, of nominal size of apertures conforming with EN 933-2.
5.2 Tightly fitting pan and lid, for the sieves.

5.3 Ventilated oven, capable of maintaining a temperature of (110 ± 5) °C, or equipment for drying

the aggregate which does not cause any particle size breakdown.
5.4 Balance or scale, accurate to 0,1 % of the mass to be weighed.
5.5 Trays.
5.6 Brushes.
5.7 Sieving machine, optional.
5.8 Coloured pencil, optional.
6 Preparation of test portion

The test portion shall consist of size fraction d /D , where d and D are determined from the aggregate

0 0 0
...

SLOVENSKI STANDARD
oSIST prEN 933-5:2021
01-januar-2021

Preskusi geometričnih lastnosti agregatov - 5. del: Določevanje odstotka lomljenih

površin zrn grobega in mešanega agregata

Tests for geometrical properties of aggregates - Part 5: Determination of percentage of

crushed particles in coarse and all-in natural aggregates
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 5:
Bestimmung des Anteils an gebrochenen Körnern in groben Gesteinskörnungen und
Gesteinskörnungsgemischen

Essais pour déterminer les caractéristiques géométriques des granulats - Partie 5:

Détermination du pourcentage de surfaces cassées dans les gravillons et cailloux
Ta slovenski standard je istoveten z: prEN 933-5
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
oSIST prEN 933-5:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN 933-5:2021
---------------------- Page: 2 ----------------------
oSIST prEN 933-5:2021
DRAFT
EUROPEAN STANDARD
prEN 933-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2020
ICS 91.100.15 Will supersede EN 933-5:1998
English Version
Tests for geometrical properties of aggregates - Part 5:
Determination of percentage of crushed particles in coarse
and all-in natural aggregates

Essais pour déterminer les caractéristiques Prüfverfahren für geometrische Eigenschaften von

géométriques des granulats - Partie 5: Détermination Gesteinskörnungen - Teil 5: Bestimmung des Anteils an

du pourcentage de surfaces cassées dans les gravillons gebrochenen Körnern in groben Gesteinskörnungen

et cailloux und Gesteinskörnungsgemischen

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 NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 933-5:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 933-5:2021
prEN 933-5:2020(E)
Contents Page

European foreword ......................................................................................................................................... 2

1 Scope ............................................................................................................................................................ 4

2 Normative references ............................................................................................................................ 4

3 Terms and definitions ........................................................................................................................... 4

4 Principle ..................................................................................................................................................... 5

5 Apparatus ................................................................................................................................................... 6

6 Preparation of test portion .................................................................................................................. 6

7 Procedure ................................................................................................................................................... 6

8 Calculation and expression of results .............................................................................................. 8

9 Test report ................................................................................................................................................. 9

Annex A (informative) Guidance for estimated mass of a test portion containing about

100 particles for aggregates with an apparent particle density of 2,65 Mg/m .................... 10

Annex B (informative) Examples of application of the test procedure .................................... 12

B.1 Test portion consisting of one particle size fraction ........................................................... 12

B.2 Test portion consisting of two or more particle size fractions ....................................... 13

Annex C (informative) Example of a test data sheet for a test portion consisting of one

particle size fraction .................................................................................................................................... 16

C.1 General ................................................................................................................................................ 16

C.2 Preparation of test portion d0/D0 where D0 ≤ 2 d0 ........................................................... 16

C.3 Sorting of particles in the test portion and subsequent calculation and expression of

results ............................................................................................................................................................... 16

Bibliography ................................................................................................................................................... 17

---------------------- Page: 4 ----------------------
oSIST prEN 933-5:2021
prEN 933-5:2020(E)
European foreword

This document (prEN 933-5:2020) 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.
This document will supersede EN 933-5:1998.

In comparison with the previous edition, the following technical modifications have been made:

a) The title has been revised to better reflect the scope;

b) Clause 3: The definition of a crushed surface has been changed. The definitions of aggregate

size and a rounded particle have been deleted. The definitions of gravel and a rounded surface

have been added;
c) Clause 4: Principle has been amended;

d) Clause 5.3: An alternative temperature has been added for the ventilated oven;

e) Clause 6: Preparation of test portion has been revised;
f) Clause 7: Procedure has been amended;
g) Clause 8: Calculation and expression of results has been amended;
h) Clause 9: The lists of required and optional data have been updated;

i) New informative Annex A, with guidance for estimated mass of the test portion, has been

added;

j) New informative Annex B, with example of application of the test procedure, has been added;

k) Previous Annex A, with example of a test data sheet, has been revised and moved to Annex C.

This document forms part of a series of tests for geometrical properties of aggregates. Test

methods for other properties of aggregates are covered by the following European Standards:

— EN 932 (all parts), Tests for general properties of aggregates

— EN 1097 (all parts), Tests for mechanical and physical properties of aggregates

— EN 1367 (all parts), Tests for thermal and weathering properties of aggregates
— EN 1744 (all parts), Tests for chemical properties of aggregates
— EN 13179 (all parts), Tests for filler aggregate used in bituminous mixtures
The other parts of EN 933 include:
— 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
---------------------- Page: 5 ----------------------
oSIST prEN 933-5:2021
prEN 933-5:2020(E)
— Part 4: Determination of particle shape — Shape index

— Part 6: Assessment of surface characteristics — Flow coefficient for coarse aggregates

— Part 7: Determination of shell content — Percentage of shells in 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 fillers (air jet sieving)

— Part 11: Classification test for the constituents of coarse recycled aggregates

3
---------------------- Page: 6 ----------------------
oSIST prEN 933-5:2021
prEN 933-5:2020(E)
1 Scope

This document specifies the reference method, used for type testing and in case of dispute, for the

determination of the percentages of crushed particles, totally crushed particles and totally

rounded particles in a sample of natural coarse aggregate or all-in aggregate. Other methods can

be used for other purposes, such as factory production control, provided that an appropriate

working relationship with the reference method has been established.
NOTE 1 Examples of advanced test methods can be found in the Bibliography.

This document applies to gravel or to a mixture of natural coarse aggregates containing gravel.

The test method specified is applicable to particle sizes between 4 mm and 63 mm.

NOTE 2 For coarse aggregate between 4 mm and 20 mm, the percentages of crushed surfaces are linked

to the flow coefficient and can therefore be used in association with the test method specified in EN 933-6.

Subclause 7.1 specifies the procedure for test portions consisting of one particle size fraction and

Subclause 7.2 specifies the procedure for test portions consisting of two or more particle size

fractions.
Guidance for estimated mass of the test portion is given in informative Annex A.

Examples of application of the test procedure and an example of a test data sheet are given in

informative Annexes B and C.
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.

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
3 Terms and definitions
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:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/ui
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oSIST prEN 933-5:2021
prEN 933-5:2020(E)
3.1
gravel

unconsolidated, natural accumulation of typically rounded rock particles resulting from erosion

Note 1 to entry: The gravel particles are often rounded (e.g. from alluvial deposits), but they can also be

angular to sub-rounded in shape (e.g. from moraine deposits).
3.2
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
3.3
test portion
d /D
0 0
sample used as a whole in a single test
3.4
constant mass

mass determined after successive weighings at least 1 h apart not differing by more than 0,1 %

Note 1 to entry: In many cases, constant mass can be achieved after a test portion has been dried for a pre-

determined period in a specified oven at (110 ± 5) °C. Test laboratories can determine the time required to

achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven

used.
3.5
crushed surface

surface of a particle with angular fractured planar faces and often distinct corners and edges

Note 1 to entry: The crushed surface is usually produced by mechanical processing, but it can also consist

of the original surface of a gravel particle, formed by geological action (breaking without any subsequent

significant wear and weathering of the gravel particle).
3.6
totally crushed particle
particle with more than 90 % of its surface crushed (tc)
3.7
crushed particle
particle with more than 50 % of its surface crushed (c)
3.8
rounded surface

surface of a gravel particle which does not conform to the definition of crushed surface in 3.5

3.9
totally rounded particle
gravel particle with more than 90 % of its surface rounded (tr)
4 Principle

The test consists of sorting by hand a test portion of aggregates into crushed particles, totally

crushed particles and totally rounded particles.
5
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oSIST prEN 933-5:2021
prEN 933-5:2020(E)

The masses of crushed particles, totally crushed particles and totally rounded particles are

determined and expressed as percentages of the test portion mass.
5 Apparatus

Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5.

5.1 Test sieves, of nominal size of apertures conforming with EN 933-2.
5.2 Tightly fitting pan and lid, for the sieves.

5.3 Ventilated oven, thermostatically controlled to maintain a temperature of (110 ± 5) °C or

(40 ± 5) °C, or equipment for drying the aggregate which does not cause any particle size

breakdown.

5.4 Balance or scale, of suitable capacity, readable to ± 0,1 % of the mass to be weighed.

5.5 Trays.
5.6 Brushes.
5.7 Sieving machine, optional.
6 Preparation of test portion

The test portion shall consist of particle size fraction d /D , where d is d if d ≥ 4 mm, or 4 mm if d

0 0 0
< 4 mm. D is D if D ≤ 63 mm, or 63 mm if D > 63 mm.

Samples (laboratory sample and other samples) shall be reduced in accordance with the

requirements of EN 932-2.

The mass of the laboratory sample, M , should have a minimum value as specified for the test

portion in EN 933-1.

Wash the laboratory sample on the d0 and D0 sieves. Discard the retained material on the D0 sieve

and the passing material on the d sieve. Dry the retained material d /D to constant mass in the

0 0 0
oven at (110 ± 5) °C.

Sieve the test sample in accordance with EN 933-1, using the d and the D sieve. Discard particles

0 0
passing the d sieve and particles retained on the D sieve.
0 0
If necessary, reduce the size
...

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