1、BRITISH STANDARDBS EN 1297:2004Flexible sheets for waterproofing Bitumen, plastic and rubber sheets for roof waterproofing Method of artificial ageing by long term exposure to the combination of UV radiation, elevated temperature and water The European Standard EN 1297:2004 has the status of a Briti
2、sh StandardICS 91.100.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+00:00 2007, Uncontrolle
3、d Copy, (c) BSIBS EN 1297:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 49848 4National forewordThis British Standard was published by BSI. It is the UK implementation of EN 1297:2004. The UK particip
4、ation in its preparation was entrusted by Technical Committee B/546, Flexible sheets for waterproofing and water vapour control, to Subcommittee B/546/2, Plastics and rubber sheets.A list of organizations represented on B/546/2 can be obtained on request to its secretary.This publication does not pu
5、rport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GM
6、T+00:00 2007, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1297September 2004ICS 91.100.50English versionFlexible sheets for waterproofing - Bitumen, plastic and rubbersheets for roof waterproofing - Method of artificial ageing by longterm exposure to the combination o
7、f UV radiation, elevatedtemperature and waterFeuilles souples dtanchit - Feuilles dtanchit detoiture bitumineuses, plastiques et lastomres - Mthodede vieillissement artificiel par exposition combine delongue dure aux rayonnements UV, la tempratureleve et leauAbdichtungsbahnen - Bitumen-, Kunststoff-
8、 undElastomerbahnen fr Dachabdichtungen - Verfahren zurknstlichen Alterung bei kombinierter Dauerbeanspruchungdurch UV-Strahlung, erhhte Temperatur und WasserThis European Standard was approved by CEN on 22 July 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
9、pulate the conditions for giving this EuropeanStandard 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 exi
10、sts in three official versions (English, French, German). 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 bodie
11、s of 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 United Kingdom.EUROPEAN COMMITTEE FOR STA
12、NDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES 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 1297:2004: ELicensed Copy: Wang Bin, na, Wed Mar 14 0
13、2:45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle6 5 Apparatus .6 5.1 Laboratory light source.6 5.2 Test Chamber.6 5.3 Specimen arrangement .6 5.4 Water supply and spr
14、ay mechanism .6 5.5 Cycle timer7 5.6 Thermometer7 5.7 Radiometer .7 6 Sampling and preparation of test specimens.7 6.1 Sampling.7 6.2 Dimensions of test specimens.7 6.3 Preconditioning of specimens .7 7 Procedure .7 7.1 General7 7.2 Exposure cycle.7 7.3 Black standard temperature .7 7.4 Chamber heat
15、ing7 7.5 Relative humidity .8 7.6 Procedure .8 8 Expression of results 8 9 Precision.8 10 Test report 8 Annex A (informative) Spectral irradiance of fluorescent UV lamps type I (340 nm) .9 Annex B (informative) Recommendations 10 Bibliography 11 Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+0
16、0:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 3 Foreword This document (EN 1297:2004) has been prepared by Technical Committee CEN /TC 254, “Flexible sheets for waterproofing“, the secretariat of which is held by BSI. This standard is one of a series of standards, which specify test methods
17、for determining dimensions and characteristics of flexible sheets as factory made products. 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 March 2005, and conflicting national standards shall be
18、withdrawn at the latest by March 2005. No existing European Standard is superseded. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgiu
19、m, 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 United Kingdom. Licensed Copy: Wang Bin, na, Wed Mar 14 02:
20、45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 4 Introduction This document has been prepared by CEN/TC 254 ”Flexible sheets for waterproofing” in order to test flexible bitumen, plastic and rubber sheets for roof waterproofing in relation to their ageing resistance to combined eff
21、ects of long term exposure to UV radiation, elevated temperature and water. This document defines one common procedure to be applied as a method for artificial ageing to all types of flexible sheets for roof waterproofing This document has been drafted for applications in roofing but it may also be
22、applied to other areas where it is relevant. Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 5 1 Scope This document specifies the method for exposure of factory made bitumen or plastic or rubber sheets for roof waterproofing to combined ef
23、fects of long term exposure by UV radiation, elevated temperature and water as means of artificial ageing. 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, t
24、he 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 EN ISO 4892-1, Plastics Methods of exposure to laboratory light sources Part 1: General guidance (
25、ISO 4892-1:1999) EN ISO 4892-3, Plastics Methods of exposure to laboratory light sources Part 3: Fluorescent UV lamps (ISO 4892-3:1994) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. Symbol Unit 3.1 fluorescent UV lamp lamp in which primary radi
26、ation from a low pressure mercury arc is transformed into higher wavelength UV by means of a fluorescent phosphor. The spectral emission of a fluorescent lamp is determined by the spectral emission of the fluorescent phosphor and the transmission characteristics of the glass tube. A fluorescent UV l
27、amp is a lamp in which the radiant emission in the ultraviolet region of the spectrum 400 nm makes up at least 80 % of the total radiation output 3.2 irradiance incident radiant flux onto a surface per unit area E W / m 3.3 spectral irradiance radiant flux per unit area per wavelength interval EW/(m
28、nm) 3.4 Radiant exposure time integral of irradiance H J/m 3.5 UV-radiation radiation with a wavelength between: 100 nm 400 nm nm Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 6 3.6 Exposed side side of the test specimen designated by the
29、 manufacturer to be exposed to the sunlight 4 Principle Test specimens cut from the product sample are exposed in an apparatus with fluorescent UV lamps at specified irradiance, black standard temperature (BST), relative humidity and cyclic water spraying. The resistance to this exposure is determin
30、ed by follow-up tests described in the product standards on flexible bitumen or plastic or rubber sheets for roof waterproofing. 5 Apparatus 5.1 Laboratory light source The UV source shall be an array of fluorescent UV lamps of type I (340 nm) or a fluorescent UV lamp combination in accordance with
31、EN ISO 4892-3 with a mean UV irradiance in the plane of the specimen surfaces of (45 5) W/m in the wavelength range 300 nm. For typical spectral irradiances see Figure A.1. The irradiance at the test specimen surface shall not vary more than 10 % in relation to any two points in the specimen holder
32、plane. In order to achieve homogeneous exposure conditions operate the apparatus according to the manufacturers instructions (e. g. replacement of lamps and repositioning of specimens) and use dummy specimens at void positions. 5.2 Test Chamber The design of the test chamber may vary but it shall be
33、 constructed from inert material and provide for uniform irradiance in accordance to 5.1 with means for controlling the black standard temperature (BST) and relative humidity in the dry period. 5.3 Specimen arrangement The test specimen racks shall allow the specimens to lie flat in the plane 5 abov
34、e the horizontal; be mounted so that the exposed face is in the plane of uniform irradiance. The specimens shall be attached to stainless steel platens of at least the same size as the specimens by appropriate means. The attachment shall leave an area open to free irradiation so that subsequent test
35、s can be performed on irradiated parts of the specimen. For inclinations near to horizontal the specimens may be alternatively placed in stainless steel pans of at least the same size as the specimens. The specimens shall be weighted in this arrangement by means of a U shaped stainless frame. The ex
36、ternal dimensions of the frame shall correspond to the specimen size. The cross section of the steel frame shall be (5 0,5) mm by approximately 10 mm. The dimension of (5 0,5) mm stands for the width of the cross section, i. e. the plane that is in contact with the specimen. If the specimens are pla
37、ced in pans, the lower end of the pans shall have sufficient slits or holes to avoid any collection of water. The attachment arrangement shall not restrain the test specimens from changes in dimensions during exposure. 5.4 Water supply and spray mechanism Demineralized water with a maximum conductiv
38、ity of 500 S/m shall be used for spraying. In general the temperature of the water to be used in the spraying procedure shall be (25 5) C at the beginning of the spray cycle. Spray nozzles shall provide a uniform and continuous wetting of the exposed specimens sides for defined periods of time. The
39、flow rate through the nozzles shall be (10 3) litres per min and m of the exposed specimen surface. Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 7 5.5 Cycle timer A continuously operating cycle timer or controller shall allow programming
40、 of the spray cycles. An hour meter shall be provided to record total time of operation and UV exposure. 5.6 Thermometer Thermometer capable of measuring the black standard temperature in accordance with EN ISO 4892-1, with means to record the temperature during each cycle. 5.7 Radiometer A radiomet
41、er to determine the UV radiant exposure in J/m in the wavelength region from 300 nm to 400 nm. 6 Sampling and preparation of test specimens 6.1 Sampling For the purpose of this document, a complete undamaged roll of the sheet to be tested shall be selected in accordance with EN 13416. 6.2 Dimensions
42、 of test specimens Test specimens of sufficient size according to the follow-up test to be performed shall be cut from the test piece in accordance with EN 13416. The machine direction should be indicated. Durable marks for dimensional measurements before and after exposure shall be applied to the t
43、est specimens. 6.3 Preconditioning of specimens Appropriate preconditioning of the specimens shall be carried out according to the tests to be performed as specified in the product standard on bitumen or plastic or rubber sheets. 7 Procedure 7.1 General The test specimens and the black standard ther
44、mometer shall be mounted in the specimen holders with their exposed sides facing the lamps (5.1). 7.2 Exposure cycle An exposure cycle has a duration of 360 min and consists of a 300 min dry period followed by a 60 min spray (wet) period in accordance with EN ISO 4892-3. Irradiation is not maintaine
45、d during the wet period. 7.3 Black standard temperature The black standard temperature (BST) shall be at (60 3) C during the dry period. The air temperature in the test chamber (5.2) shall be controlled to a constant value such that the black standard temperature (BST) equals the required value afte
46、r 30 min in the dry period. 7.4 Chamber heating During the spray period the chamber heating is turned off. Licensed Copy: Wang Bin, na, Wed Mar 14 02:45:26 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 1297:2004 (E) 8 7.5 Relative humidity The relative humidity during the dry period shall be (10 5) %
47、 after 30 min of the dry period. 7.6 Procedure Operate continuously, repeating the programmed cycle, except for servicing the instrument and inspection of test specimens. NOTE 1 The total amount of UV radiant exposure is specified in the relevant standards EN 13707and prEN 13956 (definitions and cha
48、racteristics). Relevant recommendations are given in Annex B. NOTE 2 Eventual intermediate tests or observations are specified in the standards EN 13707and prEN 13956 (definitions and characteristics). Relevant recommendations are given in Annex B. 8 Expression of results Observe, compare and record
49、 the performance of test specimens unexposed and exposed regarding their visual change, mass change and crack formation. Any subsequent destructive tests shall be conducted according to the relevant product standards for Bitumen, plastic and rubber sheets for roof waterproofing. 9 Precision The precision is not specified by this standard. No report on international laboratory tests of repeatability or reproducibility is available. An accuracy statement will be added to the next revision when suffici
