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prEN 1097-2

(Main)

Tests for mechanical and physical properties of aggregates - Part 2: Methods for the determination of resistance to fragmentation

Tests for mechanical and physical properties of aggregates - Part 2: Methods for the determination of resistance to fragmentation

This European Standard describes the reference method, the Los Angeles test, used for type testing and in case of dispute (and an alternative method, the impact test) for determining the resistance to fragmentation of coarse aggregates (main text) and aggregates for railway ballast (Annex A). 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.
This European Standard applies to natural, manufactured or recycled aggregates used in building and civil engineering.
Annex A describes a method for the determination of resistance to fragmentation of aggregates for railway ballast.
Annex B gives alternative narrow range classifications for the Los Angeles test and the impact test.
Annex C contains construction, operation and safety requirements for the impact tester.
Annex D describes a method for checking of the impact tester.
Annex E gives precision data.
Annex F contains a worked example of calculation of impact value SZ.
Annex G gives an alternative narrow range classification for the Los Angeles test of 16/32 mm recycled aggregates.
Annex H proposes additional sieves for the evaluation of the Los Angeles test for railway ballast.
Annex A is normative and Annexes B to H are informative.

Prüfverfahren für mechanische und physikalische Eigenschaften von Gesteinskörnungen - Teil 2: Verfahren zur Bestimmung des Widerstandes gegen Zertrümmerung

Diese Europäische Norm beschreibt das Referenzverfahren, Los-Angeles-Prüfverfahren, das für die Erstprüfung und in Streitfällen zur Bestimmung des Widerstandes gegen Zertrümmerung von groben Gesteinskörnungen (Haupttext) und Gesteinskörnungen für Gleisschotter (Anhang A) verwendet wird (sowie den Schlagversuch als alternatives Verfahren). Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang zum Referenzverfahren nachgewiesen wurde.
Diese Europäische Norm wird angewendet für natürliche, industriell hergestellte oder rezyklierte Gesteinskörnungen, die im Bauwesen eingesetzt werden.
Anhang A beschreibt ein Verfahren zur Bestimmung des Widerstandes gegen Zertrümmerung von Gesteinskörnungen für Gleisschotter.
Anhang B beschreibt alternative, enge Kornklassen für das Los-Angeles-Prüfverfahren und den Schlagversuch.
Anhang C umfasst Aufbau, Betrieb und Sicherheitsanforderungen für das Schlagprüfgerät.
Anhang D beschreibt ein Verfahren zur Prüfung des Schlagprüfgeräts.
Anhang E enthält Daten zur Präzision.
Anhang F enthält ein bearbeitetes Beispiel zur Berechnung des Schlagzertrümmerungswertes SZ.
Anhang G beschreibt eine alternative, enge Kornklasse für das Los-Angeles-Prüfverfahren von rezyklierten Gesteinskörnungen der Kornklasse 16/32 mm.
Anhang H beschreibt zusätzliche Siebe zur Bewertung des Los-Angeles-Prüfverfahrens für Gleisschotter.
Anhang A ist normativ während Anhänge B bis H informativer Natur sind.

Essais pour déterminer les caractéristiques mécaniques et physiques de granulats - Partie 2 : Méthodes pour la détermination de la résistance à la fragmentation

Preskusi mehanskih in fizikalnih lastnosti agregatov - 2. del: Metode določevanja odpornosti proti drobljenju

General Information

Status
Not Published
Publication Date
04-Feb-2018
Withdrawal Date
05-Aug-2018
ICS
91.100.15 - Mineral materials and products
Technical Committee
CEN/TC 154 - Aggregates
Drafting Committee
CEN/TC 154/SC 6 - Test methods
Current Stage
4098 - Decision to abandon - Enquiry
Completion Date
11-Apr-2017
Ref Project
oSIST prEN 1097-2:2016 - Tests for mechanical and physical properties of aggregates - Part 2: Methods for the determination of resistance to fragmentation

Relations

Revises
EN 1097-2:2010 - Tests for mechanical and physical properties of aggregates - Part 2: Methods for the determination of resistance to fragmentation
Effective Date
19-Jan-2023

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SLOVENSKI STANDARD
01-september-2016
3UHVNXVLPHKDQVNLKLQIL]LNDOQLKODVWQRVWLDJUHJDWRYGHO0HWRGHGRORþHYDQMD
RGSRUQRVWLSURWLGUREOMHQMX
Tests for mechanical and physical properties of aggregates - Part 2: Methods for the
determination of resistance to fragmentation
Prüfverfahren für mechanische und physikalische Eigenschaften von Gesteinskörnungen
- Teil 2: Verfahren zur Bestimmung des Widerstandes gegen Zertrümmerung
Essais pour déterminer les caractéristiques mécaniques et physiques de granulats -
Partie 2 : Méthodes pour la détermination de la résistance à la fragmentation
Ta slovenski standard je istoveten z: prEN 1097-2
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2016
ICS 91.100.15 Will supersede EN 1097-2:2010
English Version
Tests for mechanical and physical properties of aggregates
- Part 2: Methods for the determination of resistance to
fragmentation
Essais pour déterminer les caractéristiques Prüfverfahren für mechanische und physikalische
mécaniques et physiques de granulats - Partie 2 : Eigenschaften von Gesteinskörnungen - Teil 2:
Méthodes pour la détermination de la résistance à la Verfahren zur Bestimmung des Widerstandes gegen
fragmentation Zertrümmerung
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, 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.
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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1097-2:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Apparatus . 7
4.1 General apparatus . 7
4.2 Additional apparatus required for the determination of resistance to
fragmentation by the Los Angeles test method . 8
4.3 Additional apparatus required for the determination of resistance to
fragmentation by the impact test method . 9
5 Determination of resistance to fragmentation by the Los Angeles test method . 9
5.1 Principle . 9
5.2 Preparation of test portion . 9
5.3 Test procedure . 10
5.4 Calculation and expression of results . 10
5.5 Test report . 11
6 Determination of resistance to fragmentation by the impact test method . 11
6.1 Principle . 11
6.2 Preparation of test specimens . 12
6.3 Test procedure . 12
6.4 Calculation and expression of results . 13
6.5 Test report . 13
Annex A (normative) Determination of the resistance to fragmentation of aggregates
for railway ballast . 15
A.1 Apparatus . 15
A.2 Determination of the resistance to fragmentation by the Los Angeles test
method . 17
A.3 Determination of the resistance to fragmentation by the impact test method . 19
Annex B (informative) Alternative narrow range classifications for the Los Angeles
test and for the impact test . 21
B.1 Los Angeles test . 21
B.2 Impact test . 21
Annex C (informative) The impact tester: Construction, operation and safety
requirements . 22
C.1 General . 22
C.2 Construction . 22
C.3 Lifting device . 23
C.4 Sample holder . 23
C.5 Anvil . 24
C.6 Base plate and dampers . 25
C.7 Safety requirements and testing . 25
C.8 Checking of impact tester . 25
Annex D (informative) Checking of the impact tester . 34
D.1 Scope and field of application . 34
D.2 Checklist . 34
D.3 Apparatus and test agents . 34
D.4 Procedure . 36
Annex E (informative) Precision . 38
E.1 General . 38
E.2 Los Angeles test . 38
E.3 Impact test . 38
Annex F (informative) Worked example of calculation of impact value SZ . 39
Annex G (informative) Alternative narrow range classification for the Los Angeles
test of 16/32 mm recycled aggregates . 40
Annex H (informative) Additional sieve for evaluation of the Los Angeles test for
railway ballast . 41
Bibliography . 42

European foreword
This document (prEN 1097-2:2016) 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 1097-2:2010.
The main technical changes compared to EN 1097-2:2010 are the following:
— All annexes are presented in the Scope.
— Guard sieves are introduced in Table 1.
— Notes with normative text are transformed into main text or deleted.
— Subclauses 5.5, 6.5, A.2.5 and A.3.5 Test report are revised.
— Annex A is completed to contain full text, not only the parts that are different from the main
text.
— Formula A.1 is revised.
— Annex B is completed with alternative narrow range classifications for the impact test.
— A new Annex H with additional sieves for evaluation of the Los Angeles test for railway
ballast is added.
— All references (except for the normative) are dated.
— The Bibliography is checked.
This European Standard forms part of a series of tests for mechanical and physical 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 933, Tests for geometrical 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
EN 1097 consists of the following parts, under the general title Tests for mechanical and physical
properties of aggregates:
— Part 1: Determination of the resistance to wear (micro-Deval)
— Part 3: Determination of loose bulk density and voids
— Part 4: Determination of the voids of dry compacted filler
— Part 5: Determination of the water content by drying in a ventilated oven
— Part 6: Determination of particle density and water absorption
— Part 7: Determination of the particle density of filler – Pyknometer method
— Part 8: Determination of the polished stone value
— Part 9: Method for the determination of the resistance to wear by abrasion from studded
tyres — Nordic test
— Part 10: Water suction height
— Part 11: Determination of compressibility and confined compressive strength of lightweight
aggregates
1 Scope
This European Standard describes the reference method, the Los Angeles test, used for type
testing and in case of dispute (and an alternative method, the impact test) for determining the
resistance to fragmentation of coarse aggregates (main text)
...

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