DIN EN 13892-3-2015 Methods of test for screed materials - Part 3 Determination of wear resistance - Bohme German version EN 13892-3 2014《找平材料的试验方法 第3部分 耐磨性测定-BOEHME 德文版本EN 13892-3.pdf

1、March 2015 Translation by DIN-Sprachendienst.English price group 8No 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、1.100.10!%AREnglish version EN 13892-3:2014,English translation of DIN EN 13892-3:2015-03Prfverfahren fr Estrichmrtel und Estrichmassen Teil 3: Bestimmung des Verschleiwiderstandes nach Bhme;Englische Fassung EN 13892-3:2014,Englische bersetzung von DIN EN 13892-3:2015-03Mthodes dessais des matriaux

3、 pour chapes Partie 3: Dtermination de la rsistance lusure Bhme;Version anglaise EN 13892-3:2014,Traduction anglaise de DIN EN 13892-3:2015-03SupersedesDIN EN 13892-3:2004-07www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 12 pages 03.15

4、 DIN EN 13892-3:2015-03 2 A comma is used as the decimal marker. National foreword This document (EN 13892-3:2014) has been prepared by Technical Committee CEN/TC 303 “Floor screeds and screed materials” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the DIN-N

5、ormenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-09-75 AA Estriche im Bauwesen. The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 565 DIN ISO 565 Amendments This standard differs from

6、 DIN EN 13892-3:2004-07 as follows: a) in Clause 6 “Abrasive material”, the loose density of the standard abrasive grit has been changed; b) in Clause 6 “Abrasive material”, Table 2 “Sieve analysis” has been changed; c) Clause 7 “Preparation of specimens” has been supplemented. Previous editions DIN

7、 EN 13892-3:2004-07 National Annex NA (informative) Bibliography DIN ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13892-3 December 2014 ICS 91.100.10 Supersedes EN 13892-3:2004Engl

8、ish Version Methods of test for screed materials - Part 3: Determination of wear resistance - Bhme Mthodes dessai des matriaux pour chapes - Partie 3: Dtermination de la rsistance lusure Bhme Prfverfahren fr Estrichmrtel und Estrichmassen - Teil 3: Bestimmung des Verschleiwiderstandes nach Bhme This

9、 European Standard was approved by CEN on 16 November 2014. 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 refere

10、nces 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

11、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,

12、 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. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCH

13、ES 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 13892-3:2014 EEN 13892-3:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative referenc

14、es 4 3 Principle 4 4 Symbols and abbreviations 4 5 Apparatus .4 6 Abrasive material .7 7 Preparation of specimens .7 8 Testing 8 8.1 General 8 8.2 Determination of density .8 8.3 Procedure .8 9 Expression of results 8 10 Test report 8 Bibliography . 10 DINEN 13892-3:2015-03EN 13892-3:2014(E)3 Forewo

15、rd This document (EN 13892-3:2014) has been prepared by Technical Committee CEN/TC 303 “Floor screeds and screed materials”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

16、 at the latest by June 2015 and conflicting national standards shall be withdrawn at the latest by June 2015. Attention is 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

17、all such patent rights. This document supersedes EN 13892-3:2004. In comparison with the previous edition, changes have been made in: Clause 6, 2ndparagraph and Table 2; Clause 7, 2ndparagraph. EN 13892, Methods of test for screed materials, is divided in the following parts: Part 1: Sampling, makin

18、g and curing specimens for test; Part 2: Determination of flexural and compressive strength; Part 3: Determination of wear resistance Bhme the present document; Part 4: Determination of wear resistance-BCA; Part 5: Determination of wear resistance to rolling wheel of screed material for wearing laye

19、r; Part 6: Determination of surface hardness; Part 7: Determination of wear resistance to rolling wheel of screed material with floor coverings; Part 8: Determination of bond strength. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries

20、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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

21、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DINEN 13892-3:2015-03EN 13892-3:2014 (E) 4 1 Scope This European Standard specifies a method for determining the wear resistance of moulded specimens made from cementitious screed material, primarily fo

22、r hard aggregate wearing screed materials or optionally for other screed materials. The method is also suitable for specimens cut from floor screed. This method is unsuitable for synthetic resin screed materials. 2 Normative references The following documents, in whole or in part, are normatively re

23、ferenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 459-2, Building lime - Part 2: Test methods EN 13813, Screed materia

24、l and floor screeds - Screed material - Properties and requirements EN 13892-1, Methods of test for screed materials - Part 1: Sampling, making and curing specimens for test ISO 565, Test sieves - Metal wire cloth, perforated metal plate and electroformed sheet - Nominal sizes of openings 3 Principl

25、e Cast specimens are placed on the Bhme abrader, on the test track of which standard abrasive is strewn, the disk then being rotated and the specimens subjected to an abrasive load of 294 N for a given number of cycles. 4 Symbols and abbreviations A = V is the wear resistance-Bhme in cm3per 50 cm2an

26、d the loss in volume after 16 cycles l = l0 l16mis the mean reduction in mm after 16 cycles l0 is the mean thickness of the specimen in mm from the measurements made at all nine measuring points prior to testing l16mis the mean thickness of the specimen in mm from the measurements made at all nine m

27、easuring points after completion of the test m is the reduction in mass in g after 16 cycles Ris the density of the specimen in g/cm3or, in the case of multi-layer specimens, the density of the wearing layer 5 Apparatus The Bhme abrader as shown in Figure 1 consists of a rotating table with a define

28、d test track to receive the abrasive, a specimen holder and a loading device. The rotating table shall have a diameter of approximately 750 mm and be flat and positioned horizontally. When loaded, its speed shall be (30 1) r/min. DIN EN 13892-3:2015-03 EN 13892-3:2014 (E) 5 The table shall be provid

29、ed with a revolution counter and a device that switches off the rotating table automatically after 22 revolutions. The test track shall be annular, with an inside radius of approximately 120 mm and an outside radius of approximately 320 mm to give a width of (200 5) mm, and be replaceable. The track

30、 shall be made of cast iron with a perlitic structure, a phosphorus content not exceeding 0,35 % and a carbon content of more than 3 %. The track shall have a Brinell hardness of 190 HB to 220 HB 2,5/187,5 determined as the mean from measurements taken at not less than 10 points along the edge of th

31、e track. The face of the track in contact with the specimen shall be fine finished (surface roughness of 6 m to16 m). The track should be designed so as to permit both sides to be used. The track surface is subject to wear in service; the resulting reduction in thickness shall not exceed 0,3 mm and

32、any grooves not be deeper than 0,2 mm. If these values are exceeded, the track shall be replaced or refinished. When the track has been refinished three times, its hardness shall be determined anew. The specimen holder shall consist of a U frame approximately 40 mm thick, with a clear distance of (5

33、 1) mm from the test track. The frame shall be positioned so that the centreline distance between specimen and rotating table is 220 mm and the angle bead of the specimen holder, which supports the specimen, is located at a distance of (4 1) mm above the rotating table. The mounting of the specimen

34、holder shall ensure that, during testing, no vibration occurs. The loading device shall consist of a lever of two arms of different length, a loading weight and a counterweight, the lever being pivoted with as little friction as possible and positioned almost horizontally during the test. The system

35、 shall be designed to ensure that the load is transferred vertically via the plunger to the centre of the specimen. The self-weight of the lever is balanced by the counter-weight and the scale arm to receive the loading weight. The force acting on the specimen results from the loading weight multipl

36、ied by the leverage ratio, the mass of the weight being selected to produce a test force of (294 3) N (corresponding to about 0,06 N/mm2compressive stress), which shall be verified by calculation. To establish the reduction in thickness of the specimen it shall be placed on a measuring table. A temp

37、late (see Figure 2) shall be placed over the specimen in a marked orientation, to identify the nine measuring points. A dial gauge rigidly attached to the measuring table is used to measure, to an accuracy of 0,01 mm, the vertical position at any measuring point. The dial gauge is fitted with a plun

38、ger with a spherical end-bearing of 3 mm diameter. DIN EN 13892-3:2015-03 EN 13892-3:2014(E)6 Dimensions in millimetres Key 1 counterweight 2 specimen 3 specimen holder 4 rotating disk 5 test track 6 loading weight a Section A-A (enlarged) Figure 1 Principle of Bhme disk abrader Dimensions in millim

39、etres Figure 2 Template for identifying measuring points DIN EN 13892-3:2015-03 EN 13892-3:2014 (E) 7 6 Abrasive material The standard abrasive material used shall be an artificial corundum1)designed to produce an abrasive wear of 1,10 mm to 1,30 mm when testing standard granite2)specimens and of 4,

40、20 mm to 5,10 mm when testing standard limestone2)specimens. The tolerances of the chemical composition of the abrasive material is given in Table 1. Conformance to these requirements, the homogeneity of the material and the uniformity of bulk density and grading of the abrasive shall be checked bef

41、ore use. Table 1 Standard requirements of the chemical composition Constituent Content mass percentage corundum (crystallized aluminium oxide Al2O3) 99,3 The loose density of the standard abrasive grit shall be between (1,48 0,1) kg/dm3. The loose density is determined according to the test method d

42、escribed in EN 459-2 whereby the filling container of the apparatus is to be filled with 2 kg of the grit. The mass percentage of material on each sieve shall correspond to the particle size distribution of Table 2. Table 2 Sieve analysis Test sieve according to ISO 565 Percentage passing by mass 63

43、 5 125 90 7 Preparation of specimens The wear resistance Bhme is measured on the top surface as cast of 3 specimens made in accordance with EN 13892-1 or cut from floor screed. Cubes with edge length of (71 1,5) mm shall be used as specimens. Alternatively square blocks, of the same edge length, but

44、 a minimum thickness of 30 mm including any support slab may be used. The test specimen shall be dried at (110 5) C until constant mass. In order to avoid the influence of the preparation each specimen shall undergo four cycles before starting the test. 1) Information on source of supply of standard

45、 abrasives and on impartial testing laboratories can be obtained from Materialprfungsamt Nordrhein-Westfalen, Marsbruchstrae 186, D-44287 Dortmund, Deutschland. 2) The standard material is stocked by the laboratory responsible for the inspection of standard abrasives. DINEN 13892-3:2015-03EN 13892-3

46、:2014(E)8 The contact face, that is the face to be tested and the bottom face of the specimen shall be parallel and flat. For determining the reduction in thickness the bottom face shall, if appropriate, be ground parallel or otherwise machined so as to be parallel. 8 Testing 8.1 General The wear re

47、sistance Bhme shall be determined as loss in volume, calculated from changes in mass. In the case of multi-layer specimen the wear resistance is determined as a reduction in thickness. In case of the chosen determination, one of the following procedures shall be undertaken. 8.2 Determination of dens

48、ity To determine the loss in volume, prior to testing, the density of the specimen, R, shall be determined by measurements, to the nearest 0,1 mm, and by weighing, to the nearest 0,1 g. 8.3 Procedure Prior to testing each specimen shall be measured by mass or by thickness, as appropriate. For mass each specimen shall be weighed to an accuracy of 0,1 g. For reduction in thickness each specimen shall be placed contact face up on a measuring table, and reading