1、March 2015 Translation by DIN-Sprachendienst.English price group 7No 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 5
2、9.080.70!%A-$“2301001www.din.deDDIN EN ISO 13427Geosynthetics Abrasion damage simulation (sliding block test) (ISO 13427:2014);English version EN ISO 13427:2014,English translation of DIN EN ISO 13427:2015-03Geokunststoffe Simulation von Scheuerbeschdigungen (Gleitblockprfung) (ISO 13427:2014);Engli
3、sche Fassung EN ISO 13427:2014,Englische bersetzung von DIN EN ISO 13427:2015-03Gosynthtiques Simulation de lendommagement par abrasion (essai du bloc glissant) (ISO 13427:2014);Version anglaise EN ISO 13427:2014,Traduction anglaise de DIN EN ISO 13427:2015-03SupersedesDIN EN ISO 13427:1998-10www.be
4、uth.deDocument comprises 9 pagesIn case of doubt, the German-language original shall be considered authoritative.02.15 DIN EN ISO 13427:2015-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 13427:2014) has been prepared by Technical Committee ISO/TC 221 “Geosynthet
5、ics” (Secretariat: BSI, United Kingdom) in collaboration with Working Committee CEN/TC 189 “Geosynthetics” (Secretariat: NBN, Belgium). The responsible German body involved in its preparation was the DIN-Normenausschuss Textil und Textilmaschinen (DIN Standards Committee Textiles and Textile Machine
6、ry), Working Committee NA 106-01-11 AA Geotextilien und Geokunststoffe. Amendments This standard differs from DIN EN ISO 13427:1998-10 as follows: a) normative references have been updated; b) Clause 8 “Procedure” has been rendered more precise; c) the standard has been editorially revised. Previous
7、 editions DIN EN ISO 13427: 1998-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13427 December 2014 ICS 59.080.70 Supersedes EN ISO 13427:1998English Version Geosynthetics - Abrasion damage simulation (sliding block test) (ISO 13427:2014) Gosynthtiques - Simulation de lendommagement par
8、 abrasion (essai du bloc glissant) (ISO 13427:2014) Geokunststoffe - Simulation von Scheuerbeschdigungen (Gleitblockprfung) (ISO 13427:2014) This European Standard was approved by CEN on 13 September 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
9、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 e
10、xists 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
11、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
12、, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN 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 re
13、served worldwide for CEN national Members. Ref. No. EN ISO 13427:2014 EContents PageForeword 31 Scope . 42 Normative references 43 Terms and definitions . 44 Principle 45 Apparatus . 45.1 Abrasion tester 46 Test specimens 57 Conditioning 58 Procedure. 59 Calculation and expression of results . 610 T
14、est report . 6DIN EN ISO 13427:2015-03 EN ISO 13427:2014 (E) 2 Foreword This document (EN ISO 13427:2014) has been prepared by Technical Committee ISO/TC 221 “Geosynthetics“ in collaboration with Technical Committee CEN/TC 189 “Geosynthetics” the secretariat of which is held by NBN. This European St
15、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, 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
16、 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 ISO 13427:1998. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countrie
17、s 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
18、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13427:2014 has been approved by CEN as EN ISO 13427:2014 without any modification. DIN EN ISO 13427:2015-03 EN ISO 13427:2014 (E) 3 1 ScopeThis International Standar
19、d specifies a test method used for the determination of the resistance of geosynthetics to abrasion using a sliding block, whereby after abrasion the loss in tensile properties is determined.This test method is applicable to all geosynthetics used in the construction of railways.2 Normative referenc
20、esThe following documents, in whole or in part, are normatively referenced 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.ISO 55
21、4, Standard atmospheres for conditioning and/or testing SpecificationsISO 6344-2, Coated abrasives Grain size analysis Part 2: Determination of grain size distribution of macrogrits P12 to P220EN 12226, Geosynthetics General tests for evaluation following durability testing3 Terms and definitionsFor
22、 the purposes of this document, the following terms and definitions apply.3.1abrasionwearing away of any part of a material by rubbing against another surface4 PrincipleA test specimen, mounted on a fixed platform, is rubbed by an abradant with specified surface characteristics. Under controlled con
23、ditions of pressure and abrasive action, the abradant is moved along on a horizontal axis with a uniaxial motion. Resistance to abrasion is expressed as the percentage retained tensile strength of the test specimen.5 Apparatus5.1 Abrasion testerThe abrasion tester (see Figure 1) shall consist of the
24、 following essential parts:a) Balanced head and block assemblyThe assembly shall consist of two parallel, smooth plates, 50 mm 200 mm, one of which moves with a reciprocating motion. The frequency of the reciprocating plate shall be adjustable to a maximum of 90 double strokes per min. The stroke le
25、ngth shall be 25 1 mm. The second plate is rigidly supported by a double-lever assembly to provide free movement in a direction perpendicular to DIN EN ISO 13427:2015-03 EN ISO 13427:2014 (E) 4 the reciprocating plate. This plate is held stationary during the test and is well balanced so that a vert
26、ical load can be maintained by means of dead weights.Both plates are equipped with clamps at each end to hold the test specimen and the abrading medium. The clamps have rough surfaces to prevent slippage of the specimen or the abrading material during the test.b) IndicatorAn indicator for counting t
27、he number of cycles (one cycle = one double stroke) shall be used.c) WeightsWeights shall be used for applying the vertical load to the specimen.6 Test specimensFrom the laboratory sample, prepare five pairs of test specimens in each direction for measuring tensile strength in accordance with EN 122
28、26.If the material to be tested presents different characteristics on the two sides (e.g. physical characteristics or as a consequence of the manufacturing process), or in the case of a specific request from the client, then five specimens in each direction shall be tested on each face. The test rep
29、ort shall include details of this extension of the test procedure, and separate results for each side shall be given.7 ConditioningThe test specimens shall be conditioned and tested in the standard atmosphere for testing (20 2 C at 65 5 % RH) as specified in ISO 554.The specimens can be considered t
30、o have been conditioned when the change in mass in successive weightings made at intervals of not less than 2 h does not exceed 0,25 % of the mass of the test specimen.Conditioning and/or testing in a standard atmosphere can only be omitted when it can be shown that results obtained for the same spe
31、cific type of product (both structure and polymer type) are not affected by changes in temperature and humidity exceeding the limits. This information shall be included in the test report.8 Procedurea) Test the conditioned specimens in the standard atmosphere for testing as described in Clause 7.b)
32、Place the specimen to be tested on one plate and secure it by means of the clamp at each end. Place the abrading medium on the other plate and secure it by means of the clamp at each end. Use emery cloth with abradant P 100 in accordance with ISO 6344-2.NOTE 1 The specimen to be tested can be mounte
33、d on the upper or lower plate. Lower the top plate onto the bottom plate by releasing the support pin for the top plate. Be sure the abrading medium and the specimen are properly aligned.c) Load the pressure (top) plate with a (6 0,01) kg load, including the top plate.d) Start the tester and operate
34、 at a maximum frequency of 90 cycles per minute.e) Operate the tester at the specified frequency for 750 cycles, or until the specimen ruptures.NOTE 2 Some nonwoven materials may stretch as the test progresses, leading to sliding on the plate therefore resulting in less or no abrasion. This effect c
35、an sometimes be overcome with the use of an anti-slip underlay or similar product mounted between the specimen and the plate. Tapes or glues that change the properties of the material cannot be used.DIN EN ISO 13427:2015-03 EN ISO 13427:2014 (E) 5 NOTE 3 Where stretching occurs, the specimen can be
36、repositioned between the clamps to give a smooth flat surface for abrasion. This repositioning can be repeated up to 150 cycles of abrasion. If the stretching still continues after this point, resulting in reduced/no abrasion, the test can be terminated. Additionally, if the repositioning of the spe
37、cimen reduces the width of the specimen by more than 20 % (to less than 40 mm) the test can be terminated.NOTE 4 With some materials, rolls or balls of fibres can be formed on the surface of the specimen during the test. Where this occurs, the test is allowed to continue to the end and the tensile t
38、ests performed as normal. However, the occurrence should be noted in the report.NOTE 5 If a specimen ruptures before the specified number of cycles is reached, the rupture of the specimen and the number of cycles completed at the time of rupture are reported.f) If the specimen or the abrading medium
39、 slips in the clamps, discard the specimen and test another specimen after adjustments are made.g) Replace the abrading medium after each test.h) Determine the tensile strength of the test and control specimens in accordance with EN 12226.9 Calculation and expression of resultsDetermine the retained
40、 tensile strength and report to the nearest 1 %:Retained tensile strength (in %) = (B/A) 100whereA is the tensile strength of the reference specimen;B is the tensile strength of the abraded specimen.Calculate the average retained tensile strength and the coefficient of variation for the series of fi
41、ve specimens.10 Test reportThe test report shall include the following:a) identifier and year of publication of this International Standard (e.g. ISO 13427-2014);b) sample ID;c) average retained tensile strength (in %);d) coefficient of variation (in %);e) any deviation from the procedure, e.g. numb
42、er of cycles, load, etc.;f) any unusual behaviour, such as rupture during test, formation of balls/rolls of fibre on the test surface, repositioning of the specimen, etc.;g) the use of underlays, etc.;h) if the test is terminated, the reason/s for termination.DIN EN ISO 13427:2015-03 EN ISO 13427:20
43、14 (E) 6 Key1 sliding block with emery abradant2 geosynthetic specimen (testing area 50 mm 200 mm) 1 mm3 top plate4 total mass (6 0,01) kg5 (25 1) mm linear motion6 vertical guidance7 eccentricity 12,5 mmFigure 1 Example of testing apparatus with sliding blockDIN EN ISO 13427:2015-03 EN ISO 13427:2014 (E) 7
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