1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1296:2001 The Europ
2、ean Standard EN 1296:2000 has the status of a British Standard ICS 91.100.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roofing Method of artificial ageing by long term exposure to elevated temperatu
3、reThis British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 37012 7 BS EN 1296:2001 Amendments issued since
4、publication Amd. No. Date Comments National foreword This British Standard is the official English language version of EN 1296:2000. The UK participation in its preparation was entrusted by Technical Committee B/546, Flexible sheets for waterproofing, to Subcommittee B/546/2, Roof sheeting and seali
5、ng sheeting, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate t
6、hem in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the sectio
7、n entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. C
8、ompliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indi
9、cates when the document was last issued.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1296 December 2000 ICS 91.100; 91.100.50 English version Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roofing Method of artificial ageing by long term exposure to elevated tempera
10、ture Feuilles souples dtanchit Feuilles dtanchit de toiture bitumeuses, plastiques et lastomres Mthode de vieillissement artificiel par exposition de longue dure temprature leve Abdichtungsbahnen Bitumen-, Kunststoff- und Elastomerbahnen fr Dachabdichtungen Verfahren zur Knstlichen Alterung bei Daue
11、rbeanspruchung durch erhhte Temperatur This European Standard was approved by CEN on 23 November 2000. 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.
12、Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the 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 und
13、er the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem
14、bourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any
15、means reserved worldwide for CEN national Members. Ref. No. EN 1296:2000 EPage 2 EN 1296:2000 BSI 02-2001 Contents Page Foreword. 3 Introduction 3 1 Scope 3 2 Normative references 3 3 Terms and definitions 3 4 Principle 4 5 Apparatus 4 6 Sampling . 4 7 Test specimens 4 8 Procedure . 4 9 Expression o
16、f results and precision 5 10 Test report 5 Annex A (normative) Oven calibration procedure 6Page 3 EN 1296:2000 BSI 02-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 254, Flexible sheets for waterproofing, the Secretariat of which is held by BSI. This European St
17、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 2001, and conflicting national standards shall be withdrawn at the latest by June 2001. According to the CEN/CENELEC Internal Regulations, the national standar
18、ds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Annex A is no
19、rmative. Introduction This European Standard is intended for characterization of bitumen, plastic and rubber sheets as manufactured 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
20、 such products and installed in the works. This test method is intended to be used in conjunction with the relevant European Standards on definition and characteristics for bitumen, plastic and rubber sheets. 1 Scope This European Standard describes the principles, the apparatus and the procedure re
21、lated to artificial ageing by the use of thermal ageing by long term exposure in a ventilated oven at elevated temperature. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropr
22、iate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest editions of the public
23、ation referred to apply (including amendments). EN 1850-1, Flexible sheets for waterproofing Determination of visible defects Part 1: Bitumen sheets for roof waterproofing prEN 1850-2:2000, Flexible sheets for waterproofing Determination of visible defects Part 2: Plastic and rubber sheets for roof
24、waterproofing prEN 13416:1998, Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Rules for sampling 3 Terms and definitions For the purposes of this standard, the terms and definitions in prEN 13416:1998 and the following apply. 3.1 top surface upper side of
25、 the sheet, as used in situ or as indicated by the manufacturer. It is usually the inside of the rollPage 4 EN 1296:2000 BSI 02-2001 4 Principle Samples for assessment are stored up to 24 weeks at elevated temperature. The evaluations to be performed before and after thermal ageing and the exposure
26、duration are defined in the relevant European Standards on definition and characteristics for bitumen, plastic and rubber sheets. 5 Apparatus Ventilated air oven, regulated in such a way that the test specimen can be maintained at a constant temperature of (70 2) C during the full test duration. The
27、 temperature calibration procedure is described in A.1. Details on the air flow are given in A.2. 6 Sampling Samples shall be taken in accordance with prEN 13416:1998. 7 Test specimens Test pieces of sufficient size and number shall be taken from the samples to allow the evaluation tests to be perfo
28、rmed. To avoid edge effects test specimens for the evaluation tests are cut from test pieces only after thermal treatment. Normally, initial evaluation tests are performed before exposure. If this is not the case sufficient reference material shall be stored in dark conditions at (23 2) C and (50 10
29、) % relative humidity for the evaluation testing at the same time as the exposed material. 8 Procedure Set the oven to maintain a temperature of (70 2) C. Lay down the test specimens horizontally in the oven, their top face being exposed to the air. The bottom face shall lay on an anti-adhesive and
30、continuous support, normally a sheet of siliconized paper. The exposure duration is defined by the relevant product specification. It shall lie in the range indicated in Table 1. Table 1 Exposure duration 4 8 16 24 Weeks For sheets used in exposed applications the preferred duration is 24 weeks. Aft
31、er exposure specimens are stored for at least 24 h at (23 2) C and (50 10) % relative humidity before evaluation tests are performed. Samples shall be inspected visually before and after thermal exposure. Definitions of visible defects are given in EN 1850-1 and prEN 1850-2:2000.Page 5 EN 1296:2000
32、BSI 02-2001 9 Expression of results and precision 9.1 Expression of results Visible changes of the samples shall be reported. The expression of all other results shall be in accordance with the European Standards specifying the evaluation test methods. 9.2 Precision Precision is not defined by this
33、standard. NOTE This method only describes an exposure procedure and does not produce data values. Precision is dependent on evaluation tests. 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
34、 European Standard (EN 1296) and any deviation from it; c) information on sampling in accordance with clause 6; d) information on the preparation of the test specimens in accordance with clause 7; e) information on the procedure in accordance with clause 8, including the applied exposure duration; f
35、) test results in accordance with clause 9; g) date of the test.Page 6 EN 1296:2000 BSI 02-2001 Annex A (normative) Oven calibration procedure A.1 Temperature calibration Thermocouples having a minimum precision of 0,2 C in the range from 60 C to 80 C are used for checking the oven. This verificatio
36、n shall be made at least once a year at the working temperature of 70 C at three points: a point in the horizontal plane of respectively the upper, lower and central test specimen supports, each point being selected randomly in the work area of the aforementioned horizontal plane. The measurement of
37、 the temperature at these three points is carried out continuously for a period of 2 h. The temperature readings at each of these points shall not exceed the range of (70 2) C during the measurement period. This calibration procedure shall be carried out under test conditions, i.e. with test specime
38、ns in place. A.2 Ventilation calibration Ventilation calibration is carried out by the manufacturer of the oven. To maintain constant exposure conditions the oven shall always be fully loaded, using dummy specimens of the same material type as the test specimens if necessary.blankBS EN 1296:2001 BSI
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