ASTM_D_7051_-_05_2020.pdf

Designation:D705105(Reapproved 2020)Standard Test Method forCyclic Thermal Shock of SBS-Modified Bituminous RoofingSheets with Factory-Applied Metal Surface1This standard is issued under the fixed designation D7051;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the measurement of movementdue to cyclic thermal exposure of SBS(styrene-butadiene-styrene)-modified bituminous sheets with a factory-appliedmetal foil surface.1.2 The values stated in SI units are to be regarded asstandard.The values in parentheses are for information only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C552 Specification for Cellular Glass Thermal InsulationD41/D41M Specification for Asphalt Primer Used inRoofing,Dampproofing,and WaterproofingD312/D312M Specification for Asphalt Used in RoofingD5147/D5147M Test Methods for Sampling and TestingModified Bituminous Sheet Material3.Summary of Test Method3.1 This test consists of exposing two specimens of 2000 65 by 90 6 5 mm(78.7 6 0.2 by 3.5 6 0.2 in.)to cycles oftemperature produced by infrared radiation.The variation inthe specimen length dimension is measured in relation to thenumber of cycles and temperature variation.This test applies tometal foil surfaced SBS-modified bitumen roofing sheets.4.Significance and Use4.1 This test method is used to determine the dimensionalchanges and physical stability of the product upon exposure tospecified cyclic thermal conditions.It is also useful in deter-mining the integrity of the bond between the metal foil and theSBS-modified bituminous compound.5.Apparatus5.1 The apparatus and test assembly as shown in Figs.1-4consist of the following components.5.2 A hollow metal,rigid support or base on which the testsample is mounted,hereafter referred to as the shock table.Thebase shall be 2110 6 25 mm long by 280 6 25 mm wide by125 6 13 mm tall(83 6 1.0 in.long by 11 6 1.0 in.wide by5 6 0.5 in.tall).The shock table shall have water inlet andoutlet attachments mounted such that the support is always fullof circulating water.This is done to avoid expansion orcontraction of the shock table during the test.NOTE1The support can be easily constructed by welding two piecesof wide channel iron together with the addition of end plates.5.3 Mounting brackets for the measuring devices shall beattached to the shock table such that the measuring device islevel with and facing the metal reference tabs attached to thefoil surface of the specimens(see 6.4).5.4 Linear transducers,or dial indicators,accurate to 10 m(0.4 mil)shall be used to measure the change in distancebetween the adhered metal reference tab and the mountedindicator.5.5 Six or more 250 W infrared heating lamps are mountedabove the support equally spaced across the 2000 mm(79 in.)test length.NOTE2The number of lamps is not critical as long as the temperatureis accurate and consistent.5.6 Sheet metal panels,or other suitable protection,shall bemounted on the sides and ends of the hollow support to reducedrafts and temperature fluctuations during the test.The panelsshould be easily removed to allow for daily observations of thetest assembly.1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.04 on Felts,Fabrics and Bituminous Sheet Materials.Current edition approved Oct.1,2020.Published October 2020.Originallyapproved in 2005.Last previous edition approved in 2013 as D7051 05(2013).DOI:10.1520/D7051-05R20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT