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 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.

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 groben Gesteinskörnungen und natürlichen Gesteinskörnungsgemischen 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 ist anzuwenden für grobe Gesteinskörnungen mit Körnern in der Kornklasse 4/63 mm. Es ist nicht anzuwenden für leichte Gesteinskörnungen.
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 unterschiedlicher Kornklassen mit ungefähr 100 Körnern sind im informativen Anhang A aufgeführt.
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 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 aux gravillons dont la taille est comprise dans la fraction 4/63 mm. Il ne s’applique pas aux granulats légers.
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’une fraction granulaire et l’article 7.2 spécifie le mode opératoire pour les prises d’essai constituées d’au moins deux fractions granulaires.
Des indications sur la masse estimée de différentes fractions granulaires contenant environ 100 particules 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

Ta dokument določa referenčno metodo, ki se uporablja za tipsko preskušanje in v primeru spora za določanje odstotka lomljenih zrn, popolnoma zdrobljenih zrn ter popolnoma zaobljenih zrn v vzorcu naravnega grobega in mešanega agregata. Za druge namene, na primer za kontrolo proizvodnje v obratu, je mogoče uporabiti druge metode, če obstaja primerna delovna povezava z referenčno metodo.
OPOMBA 1:   Primeri naprednih preskusnih metod so opisani v bibliografiji.
Ta dokument velja za gramoz ali mešanico naravnih grobih agregatov, ki vsebujejo gramoz. Preskusna metoda se uporablja za zrna velikosti od 4 do 63 mm.
OPOMBA 2:   Pri grobem agregatu velikosti od 4 do 20 mm so odstotki zdrobljenih površin povezani s koeficientom pretoka in se zato lahko uporabljajo v povezavi s preskusno metodo, določeno v standardu EN 933-6.
Podtočka 7.1 določa postopek za preskusne deleže, sestavljene iz enega velikostnega razreda zrn, podtočka 7.2 pa določa postopek za preskusne deleže, ki so sestavljeni iz dveh ali več velikostnih razredov zrn.
Smernice za ocenjevanje mase preskusnega deleža so na voljo v informativnem dodatku A.
Primeri uporabe preskusnega postopka in primer preskusnega lista so podani v informativnih dodatkih B in C.

General Information

Status
Published
Publication Date
01-Nov-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
02-Nov-2022
Due Date
30-Sep-2022
Completion Date
02-Nov-2022

Relations

Buy Standard

Standard
EN 933-5:2023
English language
20 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day
Draft
prEN 933-5:2021
English language
18 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

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
3
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

2

---------------------- 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
3

---------------------- 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.
4

---------------------- 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
5

---------------------- 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.
6

---------------------- 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
3
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
2

---------------------- 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
4

---------------------- Page: 7 ----------------------
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

---------------------- Page: 8 ----------------------
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.
0
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
0
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
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.