DIN EN 1097-9-2014 Tests for mechanical and physical properties of aggregates - Part 9 Determination of the resistance to wear by abrasion from studded tyres - Nordic test German v.pdf

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1、March 2014 Translation by DIN-Sprachendienst.English price group 10No 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

2、91.100.15!%,=“2099326www.din.deDDIN EN 1097-9Tests for mechanical and physical properties of aggregates Part 9: Determination of the resistance to wear by abrasion fromstudded tyres Nordic test;English version EN 1097-9:2014,English translation of DIN EN 1097-9:2014-03Prfverfahren fr mechanische und

3、 physikalische Eigenschaften vonGesteinskrnungen Teil 9: Bestimmung des Widerstandes gegen Verschlei durch Spikereifen Nordische Prfung;Englische Fassung EN 1097-9:2014,Englische bersetzung von DIN EN 1097-9:2014-03Essais pour dterminer les proprits mcaniques et physiques des granulats Partie 9: Dte

4、rmination de la rsistance lusure par abrasion provoque par les pneus crampons Essai scandinave;Version anglaise EN 1097-9:2014,Traduction anglaise de DIN EN 1097-9:2014-03SupersedesDIN EN 1097-9:2005-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Docum

5、ent comprises 14 pages 02.14 DIN EN 1097-9:2014-03 2 A comma is used as the decimal marker. National foreword This document (EN 1097-9:2014) has been prepared by Technical Committee CEN/TC 154 “Aggregates” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation wa

6、s the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-03-13 AA Gemeinschaftsarbeits-ausschuss NA 062/FGSV: Gesteinskrnungen; Prfverfahren, Petrographie, Probenahme und Przision. The DIN Standards corresponding to the International Standards referred t

7、o in Clause 2 of this standard are as follows: ISO 3290 DIN 5401 (modified) ISO 9329-4 DIN 17458 (modified) Amendments This standard differs from DIN EN 1097-9:2005-10 as follows: a) Clause 1 “Scope” has been revised; b) normative references have been updated; c) Subclause 5.1.3 “Guard sieve” has be

8、en added; d) Clauses 5, 6 and 7 have been revised (e.g. the formula for the determination of the mass of the test portion, the order of loading the drum); e) the calculation of the quotients has been added in Clause 8; f) test reports in Clause 9 have been extended; g) Table A.1 has been revised; h)

9、 the Bibliography has been revised. Previous editions DIN EN 1097-9: 1998-06, 2005-10 National Annex NA (informative) Bibliography DIN 5401, Rolling bearings Balls for rolling bearings and general industrial use DIN 17458, Seamless circular austenitic stainless steel tubes subject to special require

10、ments Technical delivery conditions EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1097-9 January 2014 ICS 91.100.15 Supersedes EN 1097-9:1998 English Version Tests for mechanical and physical properties of aggregates - Part 9: Determination of the resistance to wear by abrasion from studded t

11、yres - Nordic test Essais pour dterminer les proprits mcaniques et physiques des granulats - Partie 9: Dtermination de la rsistance lusure par abrasion provoque par les pneus crampons - Essai scandinave Prfverfahren fr mechanische und physikalische Eigenschaften von Gesteinskrnungen - Teil 9: Bestim

12、mung des Widerstandes gegen Verschlei durch Spikereifen - Nordische Prfung This European Standard was approved by CEN on 3 November 2013. 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 nationa

13、l 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 versio

14、n 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, Cze

15、ch 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. E

16、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1097-9:2014 E

17、 EN 1097-9:2014 (E) 2 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle 6 5 Apparatus .6 5.1 Standard apparatus .6 5.2 Special apparatus 6 6 Preparation of test specimens .8 7 Procedure .9 8 Calculation and expression of results .9 9 Test report . 10

18、9.1 Required data 10 9.2 Optional data . 10 10 Precision 10 Annex A (informative) Alternative 8/11,2 mm size fraction for the Nordic test 11 Bibliography . 12 DINEN 1097-9:2014-03EN 1097-9:2014(E)3 Foreword This document (EN 1097-9:2014) has been prepared by Technical Committee CEN/TC 154 “Aggregate

19、s”, 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 July 2014 and conflicting national standards shall be withdrawn at the latest by July 2014. Attention i

20、s drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1097-9:1998. The main technical changes compared to EN 1097-9:1998 ar

21、e the following: 1) Scope: rewritten to allow the use of other methods under precise conditions; 5) Apparatus: Possibility to use other suitable equipment for drying aggregates than the prescribed ventilated oven. Steel quality has been updated; 6) Preparation of test specimens: rewritten (Mass of t

22、est portion: Formula revised, Loading the drum: Order changed); 8) Calculation and expression of results: the re-testing criteria has been amended and supplemented with Dixon test guidelines; 9) Test report: required and optional data have harmonized according to document CEN/TC 154/SC 6 N 1120. The

23、 test procedure specified in this European Standard has been developed in Finland, Norway and Sweden where studded tyres are frequently used during cold seasons. This European Standard forms part of a series of tests for mechanical and physical properties of aggregates. Test methods for other proper

24、ties 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 131

25、79, 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 fragmentation Part 3:

26、Determination of loose bulk density and voids Part 4: Determination of the voids of dry compacted filler DINEN 1097-9:2014-03EN 1097-9:2014 (E) 4 Part 5: Determination of the water content by drying in a ventilated oven Part 6: Determination of particle density and water absorption Part 7: Determina

27、tion of the particle density of filler Pyknometer method Part 8: Determination of the polished stone value Part 10: Water suction height Part 11: Determination of compressibility and confined compressive strength of lightweight aggregates According to the CEN/CENELEC Internal Regulations, the nation

28、al standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu

29、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1097-9:2014-03 EN 1097-9:2014 (E) 5 1 Scope This European Standard describes the reference method, used for type testing and in case of dispu

30、te, for determination of the resistance of coarse aggregate to wear by abrasion from studded tyres. 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. The test is a

31、pplicable to aggregates with a size fraction of 11,2 mm to 16 mm. NOTE An alternative size fraction 8/11,2 mm for different end uses is given in Annex A. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its app

32、lication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 932-2:1999, Tests for general properties of aggregates - Part 2: Methods for reducing laboratory samples EN 932-5, Tests for ge

33、neral 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

34、distribution - Test sieves, nominal size of apertures EN 1097-6:2013, Tests for mechanical and physical properties of aggregates - Part 6: Determination of particle density and water absorption EN ISO 4788, Laboratory glassware - Graduated measuring cylinders (ISO 4788) ISO 3290-1, Rolling bearings

35、Balls Part 1: Steel balls ISO 9329-4, Seamless steel tubes for pressure purposes Technical delivery conditions Part 4: Austenitic stainless steels 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 test specimen sample used in a single determina

36、tion when a test method requires more than one determination of a property 3.2 laboratory sample sample intended for laboratory testing 3.3 constant mass mass determined after successive weighings at least 1 h apart not differing by more than 0,1 % DIN EN 1097-9:2014-03 EN 1097-9:2014(E)6 Note 1 to

37、entry: In many cases constant mass can be achieved after a test specimen 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 o

38、f the oven used. 4 Principle A sample of a single-sized aggregate, 11,2 mm to 16,0 mm, is rotated together with steel balls and water in a steel drum. Three ribs, which are mounted on the interior of the drum, improve the mixing of the aggregate particles and the steel balls. The contents roll withi

39、n the drum with an abrading action. After the specified number of revolutions, the contents are removed from the drum and the aggregate portion is sieved on the 2 mm sieve to measure the wear as a percentage loss. 5 Apparatus Unless otherwise stated, all apparatus shall conform to the general requir

40、ements of EN 932-5. 5.1 Standard apparatus 5.1.1 Balance, capable of weighing both the test specimen and the charge to an accuracy of 0,1 % of the mass of the test specimen. 5.1.2 Set of sieves, 2,0 mm; 11,2 mm; 14,0 mm; 16,0 mm conforming to EN 933-2. 5.1.3 Guard sieve, for protecting the 2 mm siev

41、e. 5.1.4 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C. 5.1.5 Means of washing the sieved sample. 5.1.6 Equipment for reducing the laboratory samples, as specified in EN 932-2. 5.1.7 Graduated glass measuring cylinder (or cylinders), conforming to EN ISO 4788, o

42、r other means of measuring (2,00 0,01) l of water. 5.2 Special apparatus 5.2.1 Testing machine, a typical testing machine is detailed in Figure 1 with essential characteristics as specified in 5.2.2 to 5.2.7 5.2.2 A watertight hollow drum, closed at one end, having an inside diameter of (206,5 2,0)

43、mm and an internal length measured from the inside of the base to the inside of the lid of (335 1) mm. The drum shall be made of a seamless steel tube conforming to grade TS 5 of ISO 9329-4, with a minimum wall thickness of 6,0 mm. The drum shall be closed by a flat lid at least 8 mm thick and fitte

44、d with watertight and dust seals. The drum shall rotate on a horizontal axis, e.g. placed on 2 shafts as shown in Figure 1. 5.2.3 Three ribs, each with a length of (333 1) mm, shall be equally spaced around the internal circumference of the cylinder. The three ribs shall be removable, having an init

45、ial profile as shown in Figure 2, and be made of hard and tough steel NOTE Spring steel conforming to EN 10089 or ISO 683-14 is suitable. Each rib shall be rigidly secured to the drum with at least three M4 countersunk fixings. DINEN 1097-9:2014-03EN 1097-9:2014(E)7 Before first use, the ribs shall

46、be preground in the drum for (24 1) h using an aggregate with a Nordic abrasion value of not more than 6,0 prepared in accordance with Clause 6. Each rib shall be replaced when, or before, its mass is less than 15,0 g less than its mass before it was preground. 5.2.4 Abrasive charge, consisting of b

47、all bearings of (15,0 + 0,1/-0,5) mm diameter, as specified in ISO 3290-1. The hardness shall be between HRC 60 and HRC 67. NOTE 1 The lower limit deviation of the ball diameter is a working tolerance limit. NOTE 2 The minimum permissible diameter of the balls can be checked quickly by passing them

48、over the gauge (see 5.2.7). 5.2.5 Motor, capable of driving the drum at a regular speed of rotation of (90 3) r/min. 5.2.6 Counter, or other suitable device which automatically stops the rotation after (5 400 10) revolutions. 5.2.7 Gauge, (optional) to control minimum ball size, fitted with slots 14,5 + 0,1/0 mm wide. 5.2.8 Magnet, (optional) for removal of the charge from the aggregate test sample after abrasion. A magnet which is too strong should not be