1、July 2010 Translation by DIN-Sprachendienst.English price group 15No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 9
2、1.100.15!$iV“1705196www.din.deDDIN EN 1097-2Tests for mechanical and physical properties of aggregates Part 2: Methods for the determination of resistance to fragmentationEnglish translation of DIN EN 1097-2:2010-07Prfverfahren fr mechanische und physikalische Eigenschaften vonGesteinskrnungen Teil
3、2: Verfahren zur Bestimmung des Widerstandes gegen ZertrmmerungEnglische bersetzung von DIN EN 1097-2:2010-07Essais pour dterminer les caractristiques mcaniques et physiques de granulats Partie 2: Mthodes pour la dtermination de la rsistance la fragmentationTraduction anglaise de DIN EN 1097-2:2010-
4、07SupersedesDIN EN 1097-2:2006-09www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.3606.10DIN EN 1097-2:2010-07 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 15
5、4 “Aggregates” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-03-13 AA Gesteinskrnungen Prfverfahren, Petrographie, Probenahme und Przision. The DIN S
6、tandards corresponding to the International Standards referred to in this document are as follows: ISO 48 DIN ISO 48 ISO 1874-1 DIN EN ISO 1874-1 ISO 2768-1 DIN ISO 2768-1 ISO 2768-2 DIN ISO 2768-2 ISO 3302-1 DIN ISO 3302-1 ISO 4762 DIN EN ISO 4762 ISO 5725-2 DIN ISO 5725-2 ISO 8062 DIN ISO 8062 Ame
7、ndments This standard differs from DIN EN 1097-2:2006-09 as follows: a) The standard has been editorially revised. b) Annex A (normative) “Determination of the resistance to fragmentation of aggregates for railway ballast” has been added. c) Annex G (informative) “Alternative narrow range classifica
8、tion for the Los Angeles test of 16/32 mm recycled aggregates” has been added. Previous editions DVM 2109: 1935-03 = DIN 52109 DIN 52109: 1939-10 DIN 52115-1: 1988-08 DIN 52115-3: 1988-08 DIN EN 1097-2: 1998-06, 2006-09 2 DIN EN 1097-2:2010-07 National Annex NA (informative) Bibliography DIN ISO 48,
9、 Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) DIN EN ISO 1874-1, Plastics Polyamide (PA) moulding and extrusion materials Part 1: Designation DIN ISO 2768-1, General tolerances Tolerances for linear and angular dimensions without individual to
10、lerance indications DIN ISO 2768-2, General tolerances Geometrical tolerances for features without individual tolerances indications DIN ISO 3302-1, Rubber Tolerances for products Part 1: Dimensional tolerances DIN EN ISO 4762, Hexagon socket head cap screws DIN ISO 5725-2, Accuracy (trueness and pr
11、ecision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method DIN ISO 8062, Castings System of dimensional tolerances and machining allowances 3 DIN EN 1097-2:2010-07 4 This page is intentionally blank. EU
12、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1097-2 March 2010 ICS 91.100.15 Supersedes EN 1097-2:1998English Version Tests for mechanical and physical properties of aggregates Part 2: Methods for the determination of resistance to fragmentation Essais pour dterminer les caractristiques mcaniq
13、ues et physiques de granulats Partie 2 : Mthodes pour la dtermination de la rsistance la fragmentation Prfverfahren fr mechanische und physikalische Eigenschaften von Gesteinskrnungen Teil 2: Verfahren zur Bestimmung des Widerstandes gegen Zertrmmerung This European Standard was approved by CEN on 2
14、1 February 2010. 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
15、 be obtained on application to the CEN 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 CE
16、N 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,
17、Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploita
18、tion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1097-2:2010: EEN 1097-2:2010 (E) Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Apparatus .54.1 General apparatus .54.2 Additional apparatus required for the determination
19、 of resistance to fragmentation by the Los Angeles test method .54.3 Additional apparatus required for the determination of resistance to fragmentation by the impact test method .75 Determination of resistance to fragmentation by the Los Angeles test method .75.1 Principle 75.2 Preparation of test p
20、ortion 75.3 Test procedure . 8 5.4 Calculation and expression of results . 85.5 Test report 86 Determination of resistance to fragmentation by the impact test method 86.1 Principle 86.2 Preparation of test specimens .9 6.3 Test procedure . 9 6.4 Calculation and expression of results 106.5 Test repor
21、t . 10Annex A (normative) Determination of the resistance to fragmentation of aggregates for railway ballast . 11Annex B (informative) Alternative narrow range classifications for the Los Angeles test 14Annex C (informative) The impact tester: Construction, operation and safety requirements . 15C.1
22、General . 15C.2 Construction 15C.3 Lifting device . 15C.4 Sample holder . 16C.5 Anvil . 17C.6 Base plate and dampers 17C.7 Safety requirements and testing . 18C.8 Checking of impact tester 18Annex D (informative) Checking of the impact tester . 25D.1 General . 25D.2 Checklist 25D.3 Apparatus and tes
23、t agents . 25D.4 Procedure 27Annex E (informative) Precision . 29E.1 General . 29E.2 Los Angeles test . 29E.3 Impact test . 29Annex F (informative) Worked example of calculation of impact value SZ 30Annex G (informative) Alternative narrow range classification for the Los Angeles test of 16/32 mm re
24、cycled aggregates 31Bibliography 322DIN EN 1097-2:2010-07 EN 1097-2:2010 (E) Foreword This document (EN 1097-2:2010) 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, eit
25、her by publication of an identical text or by endorsement, at the latest by September 2010, and conflicting national standards shall be withdrawn at the latest by September 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN
26、 and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1097-2:1998. This 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
27、 following European Standards: EN 932 (all parts), Tests for general properties of aggregates EN 933 (all parts), Tests for geometrical properties of aggregates EN 1367 (all parts), Tests for thermal and weathering properties of aggregates EN 1744 (all parts), Tests for chemical properties of aggreg
28、ates EN 13179 (all parts), Tests for filler aggregate used in bituminous mixtures EN 1097, Tests for mechanical and physical properties of aggregates, consists of the following parts: Part 1: Determination of the resistance to wear (micro-Deval) Part 2: Methods for the determination of resistance to
29、 fragmentation 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 partic
30、le density of filler Pyknometer method Part 8: Determination of the polished stone value Part 9: Determination of the resistance to wear by abrasion from studded tyres Nordic test Part 10: Determination of water suction height According to the CEN/CENELEC Internal Regulations, the national standards
31、 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
32、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 3DIN EN 1097-2:2010-07 EN 1097-2:2010 (E) 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 imp
33、act test) for determining the resistance to fragmentation of coarse aggregates 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 es
34、tablished. This European Standard applies to natural, manufactured or recycled aggregates used in building and civil engineering. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. Fo
35、r undated references, the latest edition of the referenced document (including any amendments) applies. EN 932-1, Tests for general properties of aggregates Part 1: Methods for sampling EN 932-2, Tests for general properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tes
36、ts 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
37、 distribution Test sieves, nominal size of apertures EN 1097-6:2000, Tests for mechanical and physical properties of aggregates Part 6: Determination of particle density and water absorption EN 10025-2:2004, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy
38、 structural steels 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Los Angeles coefficient LA percentage of the test portion passing a pre-determined sieve after completion of the test 3.2 impact value SZ value SZ which gives a measure of the
39、 resistance of aggregates to dynamic crushing, and is equal to one fifth of the sum of the mass percentages of the tested sample passing through five specified test sieves when tested in accordance with Clause 6 3.3 test specimen sample used in a single determination when a test method requires more
40、 than one determination of a property 4DIN EN 1097-2:2010-07 EN 1097-2:2010 (E) 3.4 test portion sample used as a whole in a single test 3.5 laboratory sample reduced sample derived from a bulk sample for laboratory testing 3.6 constant mass successive weighings after drying at least 1 h apart not d
41、iffering by more than 0,1 % NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven (see 4.1.3) at (110 5) C. Test laboratories may determine the time required to achieve constant mass for specific types and sizes of sample
42、 dependent upon the drying capacity of the oven used. 4 Apparatus Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5. 4.1 General apparatus 4.1.1 Test sieves, conforming to EN 933-2 with aperture sizes as specified in Table 1. Table 1 Test sieves Test Apertu
43、re size mm Los Angeles 1,6; 10; 11,2 (or 12,5); 14 Impact test a 0,2; 0,63; 2; 5; 8; 10; 11,2; 12,5 aFor the impact test, because of the tolerances in the sieve openings, the same 8 mm test sieve used for the preparation of the test portion should again be used for the evaluation of the test. 4.1.2
44、Balance, capable of weighing the test portion to an accuracy of 0,1 % of the mass of the test portion. 4.1.3 Ventilated oven, controlled to maintain a temperature of (110 5) C. 4.2 Additional apparatus required for the determination of resistance to fragmentation by the Los Angeles test method 4.2.1
45、 Equipment, for reducing the laboratory sample to a test portion, as described in EN 932-2. 4.2.2 Los Angeles test machine, comprising the following essential parts. NOTE An example of a machine that has been found to be satisfactory is shown in Figure 1. 5DIN EN 1097-2:2010-07 EN 1097-2:2010 (E) Ke
46、y 1 internal length (508 5) mm 2 internal diameter (711 5) mm 3 shelf 4 cover and opening 5 rotation Figure 1 Typical Los Angeles testing machine 4.2.2.1 Hollow drum, made of structural steel plate (120,15,0+) mm thick conforming to grade S275 of EN 10025-2:2004 which has been selected to be formed
47、without undue stress, and can be welded without significant distortion. The drum shall be closed at both ends. It shall have an internal diameter of (711 5) mm and an internal length of (508 5) mm. The drum shall be supported on two horizontal stub axles fixed to its two end walls but not penetratin
48、g inside the drum; the drum shall be mounted so that it rotates about a horizontal axis. An opening (150 3) mm wide shall be provided, preferably over the whole length of the drum, to facilitate insertion and removal of the sample after the test. During the test, the opening shall be sealed so that it is dustproof, by using a removable cover which enables the inside surface to remain cylindrical. The cylindrical inner surface shall be interrupted by a projecting shelf, placed between 380 mm and 820 mm from the nearest edge of the opening. The distance shall be measured along the inside o
