ASTM_D_4073_-_D_4073M_-_06_2019e1.pdf

Designation:D4073/D4073M06(Reapproved 2019)1Standard Test Method forTensile-Tear Strength of Bituminous Roofing Membranes1This standard is issued under the fixed designation D4073/D4073M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially revised in January 2019.1.Scope1.1 This test method covers the determination of the tensile-tear strength of bituminous roofing membranes.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.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:2D95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD2829/D2829M Practice for Sampling and Analysis of Ex-isting Built-Up Roof SystemsD3617/D3617M Practice for Sampling and Analysis ofBuilt-Up Roof Systems During Application3.Summary of Test Method3.1 The tensile-tear strength of a membrane in both longi-tudinal and transverse directions is determined by measuringthe maximum load when notched specimens of specific dimen-sions are tested to failure at an arbitrary,fixed,tensile strainrate.4.Significance and Use4.1 Determining the tensile-tear strength of laboratory andfield samples of roofing membranes should be useful indeveloping performance criteria,and as one basis for compari-son of different materials and systems.The effects oftemperature,moisture,and aging may be evaluated by appro-priate selection of field samples or conditioning of laboratorysamples,and tests may be conducted in an environmentalchamber.5.Apparatus5.1 Testing MachineUniversal or standard testing machinewith automatic load and strain recording equipment,capable ofcross-head movement at a constant rate of 2.54 mm/min 0.100in./min.5.2 GripsSelf-aligning grips or clamps for holding the testspecimen between the stationary member and the movablemember or cross-head of the testing machine.Jaw faces of thegrips shall be 75 mm 3.0 in.wide by 50 mm 2.0 in.deep,shall provide uniform clamping pressure,and shall preventslippage of the specimen during test.5.3 Environmental ChamberAn insulated chamber withheating and cooling capabilities,designed to enclose the testspecimen and clamps so that the temperature may be controlledduring a test.6.Sampling6.1 Field SamplesField samples shall be taken in accor-dance with Practice D2829/D2829M or D3617/D3617M but ofa size suitable to provide sufficient material for testing in boththe machine and cross-machine directions.In cases where fieldapplied aggregate is in place,it shall be removed with a hotscraper such as a putty knife without damaging the top felt.Incases where the insulation facer is a part of the membranesystem it should be included and so reported.6.2 Laboratory Samples:1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.20 onRoofing Membrane Systems.Current edition approved Jan.1,2019.Published January 2019.Originallyapproved in 1981.Last previous edition approved in 2013 as D4073 06(2013).DOI:10.1520/D4073_D4073M-06R19E01.2For 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)Committee.1 6.2.1 Condition all components at 23 6 2C 74 6 4F and50 6 5%relative humidity for a minimum of 72 h prior toconstructing the membrane sample.6.2.2 Prepare sample membranes approximately 300 by