1、BS EN 13897:2004ICS 91.100.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFlexible sheets forwaterproofing Bitum n, plastic andrubbersheets forroof waterproofing Determination ofwatertightness afterstretching at lowtemperatureseThis British Standardwas publis
2、hed under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2009. BSI 2009ISBN 978 0 580 61210 7Amendments/corrigenda issued since publicationDate CommentsBS EN 13897:2004National forewordThis British Standard is the UK implementation of EN 13897:2004.The UK participation in its pr
3、eparation was entrusted to TechnicalCommittee B/546, Flexible sheets for waterproofing and water vapourcontrol.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. User
4、s are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 13897:2004EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13897November 2004ICS 91.100.50English versionFlexible sheets for waterproofing - Bitumen, plastic and rubbe
5、rsheets for roof waterproofing - Determination of watertightnessafter stretching at low temperatureFeuilles souples dtanchit - Feuilles dtanchit detoiture bitumineuses, plastiques et lastomerres -Dtermination de l tancheit aprs tirement bassetemperatureAbdichtungsbahnen - Bitumen-, Kunststoff- undEl
6、astomerbahnen fr Dachabdichtungen - Bestimmung derWasserdichtheit nach Dehnung bei niedriger TemperaturThis European Standard was approved by CEN on 10 September 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStan
7、dard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, G
8、erman). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Den
9、mark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISC
10、HES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13897:2004: EBS EN 13897:2004EN 13897:2004 (E) 2 Contents page Foreword. 3 1 Scope 4 2 Normative refere
11、nces . 4 3 Terms and definitions. 4 4 Principle . 4 5 Apparatus 4 5.1 Tensioning device. 4 5.2 Dial gauge 5 5.3 Conditioning space. 5 5.4 Vacuum pad. 5 5.5 Vacuum pump . 6 5.6 Pressure gauge . 6 6 Sampling 6 7 Preparation of test specimens. 7 8 Procedure 7 9 Expression of results 7 10 Test report .
12、8 BS EN 13897:2004EN 13897:2004 (E) 3 Foreword This document (EN 13897:2004) has been prepared by Technical Committee CEN/TC 254 “Flexible sheets for waterproofing”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publicatio
13、n of an identical text or by endorsement, at the latest by May 2005, and conflicting national standards shall be withdrawn at the latest by August 2006. This standard is one of a series of standards which specify test methods for determining dimensions and properties of flexible sheets, as factory m
14、ade products. This European Standard is applied in conjunction with European Standards specifying product characteristics for bitumen, plastic and rubber sheets for waterproofing. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are b
15、ound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and Un
16、ited Kingdom. BS EN 13897:2004EN 13897:2004 (E) 4 1 Scope This document specifies a test for determining the ability of flexible sheets to remain watertight after being stretched at low temperature. This standard is applicable only for mechanically fastened single layer waterproofing. This standard
17、has been drafted for application in roofing, but it may also be used in other areas where it is relevant. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, th
18、e latest edition of the referenced document (including any amendments) applies. EN 13416, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling. 3 Terms and definitions For the purpose of this document, the terms and definitions given in the E
19、uropean Standards on product specifications for waterproofing sheets apply. 4 Principle The test specimen is stretched at low temperature to a given elongation (percentage). Afterwards the specimen is tested at room temperature in the stretched state for watertightness by means of a vacuum pad and s
20、oap solution. 5 Apparatus The apparatus consists of the parts given in 5.1 to 5.6. 5.1 Tensioning device A tensioning device (example shown in Figure 1) is equipped with two grips to hold one test specimen. One grip can be moved in the plane of the test specimen in order to induce elongation and fix
21、ed in position at a predetermined value. The test specimen shall be strained along its entire width without sliding in the grips. BS EN 13897:2004EN 13897:2004 (E) 5 Dimensions in millimetres Key 1 Test specimen Figure 1 Device for tensioning of test specimen 5.2 Dial gauge The dial gauge for record
22、ing the state of tensioning shall have an accuracy of at least 0,1 mm. 5.3 Conditioning space A conditioning space maintained at (10 2) C in which the tensioning device is conditioned and operated. 5.4 Vacuum pad The vacuum pad for checking watertightness after stretching as shown in Figure 2 can be
23、 made of e.g. 5 mm thick acrylate plastic. BS EN 13897:2004EN 13897:2004 (E) 6 Dimensions in millimetres Key 1 Pressure gauge 2 Support of height 2-3 mm 3 Rubber gasket of height 5 mm Figure 2 Vacuum pad for control of tightness after stretching 5.5 Vacuum pump The vacuum pump shall maintain a negat
24、ive pressure of (15 3) kPa. 5.6 Pressure gauge A pressure gauge with an accuracy of 0,2 kPa and mounted on the vacuum pad. 6 Sampling Test samples shall be taken in accordance with EN 13416. BS EN 13897:2004EN 13897:2004 (E) 7 7 Preparation of test specimens Two test specimens cut in the direction o
25、f the manufacture of the material, and two test specimens cut perpendicularly to this shall be taken from the test piece. The test specimens shall be taken evenly spaced over the test piece and at least 100 mm from edges. The size of the test specimens shall be approximately: 200 mm 420 mm. The test
26、 specimens shall be stored for at least 24 h at (23 2) C and 30 % RH to 70 % RH. 8 Procedure Each test specimen is installed in the tensioning device, with a negligible strain, so that the clear gauge length between the grips is (300 2) mm. In order to facilitate fixing, the test specimen shall be s
27、upported underneath its entire length with a metal sheet during this operation. The temperature of the test specimen and the tensioning device shall be (23 2) C during installation. After installation the tensioning device with the test specimen is moved to the conditioning space at (-10 2) C and ke
28、pt there for 2 h 10 min. Keeping the tensioning device with the test specimen in the conditioning space, the straining is then carried out at a separation speed of the grips of (15 3) mm/min to the specified level of elongation as given in Table 1. Table 1 Stages of elongation Gauge length Elongatio
29、n Dial gauge reading mm % mm 300 1 3 300 5 15 300 10 30 The tensioning device is then moved from the conditioning space to a room at (23 2) C. Within 5 min to 10 min the test specimen is examined for a possible leakage by coating the upper side with a soap solution and by attaching the vacuum pad to
30、 the top, applying a pressure difference to the underside of the test specimen of (15 3) kPa. If after 60 s no air bubbles are visible, the test specimen is considered to have no leakage. Tests with a breakage of the test specimen close to the grips of the tensioning device shall not be taken into a
31、ccount. In such case the test shall be repeated. 9 Expression of results The watertightness following stretching at low temperature is expressed as the elongation, in percent, which has not caused leakage of the flexible sheet for roofing in four out of four test specimens. BS EN 13897:2004EN 13897:
32、2004 (E) 8 10 Test report The test report shall include at least the following information. a) all details necessary to identify the product tested; b) reference to this European Standard (EN 13897) and any deviations from it; c) information about sampling in accordance with clause 6; d) information
33、 about preparation of test specimens in accordance with clause 7; e) information about test procedure in accordance with clause 8; f) test results; g) date of the test. BS EN 13897:2004This page has been intentionally left blank BS EN13897:2004BSI GroupHeadquarters 389Chiswick High Road,London, W4 4
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