1、November 2013 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).IC
2、S 91.100.50!%*1“2071496www.din.deDDIN EN 12311-2Flexible sheets for waterproofing Determination of tensile properties Part 2: Plastic and rubber sheets for roof waterproofing;English version EN 12311-2:2013,English translation of DIN EN 12311-2:2013-11Abdichtungsbahnen Bestimmung des Zug -Dehnungsve
3、rhaltens Teil 2: Kunststoff- und Elastomerbahnen fr Dachabdichtungen;Englische Fassung EN 12311-2:2013,Englische bersetzung von DIN EN 12311-2:2013-11Feuilles souples dtanchit Dtermination des proprits en traction Partie 2: Feuilles dtanchit de toiture plastiques et lastomres;Version anglaise EN 123
4、11-2:2013,Traduction anglaise de DIN EN 12311-2:2013-11SupersedesDIN EN 12311-2:2010-12www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 12 pages 10.13 DIN EN 12311-2:2013-11 2 A comma is used as the decimal marker. National foreword This
5、 document (EN 12311-2:2013) has been prepared by Technical Committee CEN/TC 254 “Flexible sheets for waterproofing” (Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-04
6、-03 AA Baubahnen. Amendments This standard differs from DIN EN 12311-2:2010-12 as follows: a) in Clause 8 “Procedure”, the separation speed has been brought in line with CEN/TC 189 standards; b) in Clause 9 “Expression of results”, precision data of a Round Robin test have been added; c) the standar
7、d has been editorially revised. Previous editions DIN 16935: 1971-05 DIN 16937: 1971-05 DIN 16938: 1971-05 DIN 16730: 1976-05 DIN 16731: 1976-05 DIN 16732-1: 1976-05 DIN 16732-2: 1976-05 DIN 16934: 1979-12 DIN 16726: 1986-12 DIN EN 12311-2: 2000-12, 2010-12 EUROPEAN STANDARD NORME EUROPENNE EUROPISC
8、HE NORM EN 12311-2 May 2013 ICS 91.100.50 Supersedes EN 12311-2:2010English Version Flexible sheets for waterproofing - Determination of tensile properties - Part 2: Plastic and rubber sheets for roof waterproofing Feuilles souples dtanchit - Dtermination des proprits en traction - Partie 2 : Feuill
9、es dtanchit de toiture plastiques et lastomres Abdichtungsbahnen - Bestimmung des Zug-Dehnungsverhaltens - Teil 2: Kunststoff- und Elastomerbahnen fr Dachabdichtungen This European Standard was approved by CEN on 28 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulation
10、s 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 be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. Th
11、is 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN mem
12、bers 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, Portu
13、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by an
14、y means reserved worldwide for CEN national Members. Ref. No. EN 12311-2:2013: EEN 12311-2:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle 5 5 Apparatus .5 6 Sampling .6 7 Preparation of test specimens .6 8 Procedure .7 9
15、Expression of results 8 9.1 Evaluation .8 9.2 Precision of the test method 9 10 Test report 9 Bibliography . 10 DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 3 Foreword This document (EN 12311-2:2013) has been prepared by Technical Committee CEN/TC 254 “Flexible sheets for waterproofing”, the secretaria
16、t of which is held by NEN. 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 November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn t
17、o 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 12311-2:2010. This document has been technically and editorially revised in or
18、der to: adjust the separation speed to CEN TC 189 standards; add precision data of a Round Robin test. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN-CENELEC Internal Regulations, the national stan
19、dards 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, Lithuania, L
20、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 4 Introduction This European Standard is intended for characterisation of plastic and rubber sheets as manufactur
21、ed or supplied before use. This test method relates exclusively to products, or to their components where appropriate, and not to waterproofing membrane systems composed of such products and installed in the works. This test is intended to be used in conjunction with European Standards on product ch
22、aracteristics for plastic and rubber sheets for waterproofing. DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 5 1 Scope This European Standard specifies test methods for the determination of the tensile properties of plastic and rubber sheets for roof waterproofing. 2 Normative references The following d
23、ocuments, 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. EN 1849-2, Flexible sh
24、eets for waterproofing Determination of thickness and mass per unit area Part 2: Plastic and rubber sheets EN 13416, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling EN ISO 7500-1, Metallic materials Verification of static uniaxial testin
25、g machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system (ISO 7500-1) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 top surface upper side of the sheet, as used in situ Note 1 to ent
26、ry: This is usually the inside of the roll. 3.2 maximum tensile force largest value of tensile force recorded during testing 3.3 elongation at maximum tensile force elongation of the test specimen at the maximum tensile force 3.4 elongation at break elongation of the test specimen at rupture 4 Princ
27、iple A test specimen is stretched at a constant speed until it ruptures. The force and elongation is continuously recorded throughout the test, and preferably with a permanent record of the maximum tensile force. 5 Apparatus Tensile testing machine equipped with a continuous recording of force and c
28、orresponding elongation and capable of maintaining a uniform speed of grip separation as specified below. DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 6 The tensile testing machine shall have a sufficient loading capacity of at least 2000 N and a grip separation speed of (5 1, 100 10 and 500 50) mm/min
29、. The width of grips shall not be less than the width of the test specimen. The tensile testing machine shall be equipped with grips of a type which maintain or increase the clamping pressure as a function of the increase of the tensile force applied to the test specimen. The test specimen shall be
30、held so that it does not slip in the grips more than 1 mm for products up to and including 3 mm thick, and 2 mm for thicker products. A mark or tape on the test specimen where it enters the grips will help reveal any slip. The method of gripping shall not induce premature rupture close to the grips.
31、 If the slippage from the grips exceeds the stated limits or for the method B (dumb-bell type), the actual elongation of the test specimen shall be measured with an extensometer. The force measuring system shall meet at least Class 2 of EN ISO 7500-1 (i.e. 2 %). 6 Sampling Samples shall be taken in
32、accordance with EN 13416. 7 Preparation of test specimens Unless otherwise specified, for a complete tensile test two sets of test specimens shall be prepared: a set of five for the longitudinal direction and a set of five for the transverse direction. Test specimens shall be cut from a test piece n
33、ot closer than (100 10) mm from the edge of the sheet, with the aid of a template, or die cutter as follows: method A: rectangular type (50 0,5) mm x 200 mm according to Figure 1 and Table 1; method B: dumb-bell type (6 0,4) mm x 115 mm according to Figure 2 and Table 1 or rectangular type (15 0,5)
34、mm x 170 mm according to Figure 1 and Table 1. Any non-permanent surface layer should be removed. A set of test specimens (longitudinal or transverse direction) with a mesh or fabric internal layer, backing or laminated reinforcement shall have the same number of threads. Cutting of threads should b
35、e avoided. Condition the test specimens, prior to testing, for at least 20 h in a standard atmosphere of (23 2) C and (50 5) % relative humidity. The tensile properties shall be determined in accordance with method A with the following exceptions: For sheet with a non-woven inner layer (e.g. fibre g
36、lass mat) of less than or equal to 80g/m, method B the dumb-bell type (see Figure 2 and Table 1) shall be used. For determining tensile properties (young modulus/ secant modulus), e.g. for EN 1548 and for determining tensile properties in accordance with EN 1847, method B with a 15 mm rectangular sp
37、ecimen shall be used. DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 7 8 Procedure In the case of method B, the thickness is measured as the effective thickness of the sheet according to EN 1849-2. The test specimen shall be tightly clamped in the tensile test machine grips (Clause 5) taking care that th
38、e longitudinal axis of the test specimens and the axis of the testing machine and grips are correctly aligned. A preload of maximum 5 N before the start of the test is recommended to take out any slack in the test specimen. The test is carried out on a test specimen at a temperature of (23 2) C. A c
39、onstant separating speed for the grips of (100 10) mm/min with the following exceptions has to be used: For products with a declared value (e.g. MLV or MDV) for the elongation with more than 400 %, a constant separation speed of 500 mm/min has to be used. For the young modulus, which is defined as s
40、ecant modulus between 1 % and 2 % strain, shall be deduced from the stress-strain curve when a separation speed of (5 1) mm/min has been used. The applied tensile force and the distance between the grips or the distance between the gauge marker for the rectangular type or the distance between the ga
41、uge marks for the dumb-bell types shall be recorded until the test specimen breaks. The mode of failure of the specimen shall be noted. In the case of sheets with composite reinforcements, which give rise to two or more distinct peaks on the force/elongation curve, the force and elongation of the tw
42、o greatest peaks and also the elongation at break shall be recorded. Key 1 gauge mark Figure 1 Rectangular test specimen for method A and method B DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 8 Key 1 gauge mark Figure 2 Dumb- bell test specimen for method B Table 1 Test specimen data Method A Method B
43、Method B Dumb-bell Rectangular (mm) (mm) (mm) Overall length, min (L3) 200 115 170 Width of ends (b1) 25 1 Length of narrow parallel portion (L1) 33 2 Width (b) 50 0,5 6 0,4 15 0,1 Small radius (r) 14 1 Large radius (R) 25 2 Distance between gauge marks (L0) 100 15 25 1 100 15 Initial distance betwe
44、en grips (L2) 120 5 80 5 120 5 If no rupture occurs within 1000 mm displacement of the grips then the distance between the grips (L2) may be reduced to (70 5) mm and the distance between gauge marks (L0) to (50 5) mm. 9 Expression of results 9.1 Evaluation Determine the maximum force and the corresp
45、onding elongation calculated from the separation of the tensile testing machine grips or gauge marks and expressed as a percentage of the original gauge length. DIN EN 12311-2:2013-11EN 12311-2:2013 (E) 9 Disregard any test result where the test specimen breaks within 10 mm from the grips or when it
46、 slips by more than the permitted limit within the grips of the tensile testing machine, and retest with a replacement specimen. The maximum tensile force and corresponding elongation and the elongation at break are noted, together with the direction of test. State the method of measurement of elong
47、ation, i.e. grip separation or extensometer. List the individual values for the test specimens in each direction and calculate the arithmetic mean and standard deviation of tensile force in N/50 mm for method A and tensile stress in N/mm2for method B. The tensile stress (N/mm2) shall be calculated b
48、ased on the effective sheet thickness (EN 1849-2) of the specimen. State the result to the nearest N/50 mm for method A, to the nearest 0,1 N/mm2for method B and elongation with two significant figures. 9.2 Precision of the test method Precision data are based on a Round Robin test involving nine European laboratories. Reinforced PVC-p membranes were tested according to method A. The Round Robin was performed according to ISO Guide 4
