ASTM_D_6383_-_D_6383M_-_99_2015.pdf

Designation:D6383/D6383M99(Reapproved 2015)Standard Practice forTime-to-Failure(Creep-Rupture)of Adhesive JointsFabricated from EPDM Roof Membrane Material1This standard is issued under the fixed designation D6383/D6383M;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 practice covers sample preparation temperatures,test parameters,and specimen exposure conditions that areapplicable when Test Method D5405 is used for conductingtime-to-failure(creep-rupture)tests of adhesive joints fabri-cated from ethylene-propylene-diene terpolymer(EPDM)roofmembrane material.1.2 This practice is applicable to joints fabricated in thelaboratory from EPDM roof membrane materials and adhe-sives received from suppliers,and to joints prepared fromEPDM seams sampled from field installations.1.3 The joints are bonded using preformed tape or liquid-based adhesives,and EPDM roof membrane materials that arenon-reinforced,fabric-or scrim-reinforced,and fabric backed.Primers are also used as recommended for the specific adhe-sive.1.4 This practice contains notes that are explanatory and arenot part of the mandatory requirements of this practice.1.5 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 non-conformancewith the standard.1.6 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 and health practices and determine the applica-bility of the regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D907 Terminology of AdhesivesD1079 Terminology Relating to Roofing and WaterproofingD5405 Test Method for Conducting Time-to-Failure(Creep-Rupture)Tests of Joints Fabricated from NonbituminousOrganic Roof Membrane Material2.2 SPRI Document:3SPRI Recommended Laboratory Test Methods for Liquidand TapeAdhesives Used to Splice Single-Ply Membranes3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,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 adherents 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 Practice4.1 Adhesive joints are prepared in the laboratory at ambi-ent and low temperatures using tape or liquid adhesives andEPDM roof membrane material.Creep-rupture tests are then1This practice is under the jurisdiction ofASTM Committee D08 on Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.18 on Nonbi-tuminous Organic Roof Coverings.Current edition approved Dec.1,2015.Published December 2015.Originallyapproved in 1999.Last previous edition approved in 2011 as D6383/D6383M 99(2011)1.DOI:10.1520/D6383_D6383M-99R15.2For 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.3Available from Single Ply Roofing Institute(SPRI),77 RumfordAve.,Suite 3B,Waltham,MA 02453.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 conducted in accordance with Test Method D5405 before andafter subjecting these joints to artificial exposure in thelaboratory.The loads are applied in either peel or shearconfigurations at ambient and elevated temperatures.Table 1summarizes the preparation temperatures,test parameters,andexposure conditions incorporated in this practice.Alternatively,adhesive joints are prepared from EPDM seams sampled fromroofs in service,and then subjected directly to creep-rupturetesting.5.Significance and Use5.1 An important factor affecting the performance of seamsof EPDM membranes is their ability to remain bonded over themembranes expected service life.Time-to-failure tests providea means of characterizing the behavior of joints under constantload over time.NOTE1Table 1 is based on the results of an industry governmentconsortium study on creep-rupture resistance(time-to-failure)of EPDMadhesive joints.4,5Referral to Footnotes 5 and 6 provi