ASTM_D_5405_-_D_5405M_-_98_2021.pdf

Designation:D5405/D5405M98(Reapproved 2021)Standard Test Method forConducting Time-to-Failure(Creep-Rupture)Tests of JointsFabricated from Nonbituminous Organic Roof MembraneMaterial1This standard is issued under the fixed designation D5405/D5405M;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.1.Scope1.1 This test method covers laboratory determination of thetime-to-failure(creep-rupture)of joints fabricated from nonbi-tuminous organic roof membrane material.The test methodcovers both T-peel and lap-shear joints subjected to constanttensile load under controlled environmental conditions.Thejoints,made from either unreinforced or fabric-reinforcedmembrane material,are prepared in the laboratory or sampledfrom roofs in service.1.2 Sheet materials from which the joints are fabricatedinclude vulcanized rubbers,nonvulcanized polymeric sheets,and thermoplastics.The bonding methods for joint formationinclude the use of liquid-based adhesives,preformed tapes,andthermal and solvent weld processes.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.1.4 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.1.5 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:2D816 Test Methods for Rubber CementsD907 Terminology of AdhesivesD1079 Terminology Relating to Roofing and WaterproofingD1876 Test Method for Peel Resistance of Adhesives(T-Peel Test)3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminologies D907 and D1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 creep-rupture testa test that measures the time-to-failure of a specimen subjected to a constant load;progressivespecimen deformation may also be measured.3.2.2 failurerupture of the bond resulting in completeseparation of its adherends under the test conditions;or,alternatively,rupture of the membrane material away from thebonded section of the test specimen(that is,material rupture).3.2.3 time-to-failurethe period of time beginning when ajoint specimen is placed under load and ending when failureoccurs.4.Summary of Test Method4.1 This test method is a creep-rupture test without mea-surement of specimen deformation.The time-to-failure,inhours,of joints fabricated from nonbituminous organic roofmembrane materials is measured when subjected to constantdeadweight loads under controlled temperature and humidityconditions.5.Significance and Use5.1 An important factor affecting the performance of jointsof nonbituminous membranes is their ability to remain bondedover the membranes expected service life.Time-to-failure1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.18 onNonbituminous Organic Roof Coverings.Current edition approved Dec.1,2021.Published December 2021.Originallyapproved in 1993.Last previous edition approved in 2015 as D5405/D5405M 98(2015).DOI:10.1520/D5405_D5405M-98R21.2For 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?tests provide a means of characterizing the behavior of jointsunder constant load over time.5.2 Creep is a sensitive index of rheological properties thatdepend on material,load,temperature,and time.Time-to-failure data that are obtained over a relatively short time periodcan evaluate one factor affecting a joints ability to withstandstatic loading over a relatively long ti