ASTM_D_7272_-_06_2018.pdf

Designation:D727206(Reapproved 2018)Standard Test Method forDetermining the Integrity of Seams Used in JoiningGeomembranes by Premanufactured Taped Methods1This standard is issued under the fixed designation D7272;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 describes destructive quality controland/or quality assurance tests to determine the integrity ofseams produced using taped seaming methods.This testmethod presents the procedures used for determining thequality of taped seams subjected to both peel and shear tests.These test procedures are intended for nonreinforced andreinforced geomembranes.1.2 The types of tape seaming techniques used to constructgeomembrane seams include the following:1.2.1 Inseam TapeThis technique requires the membraneto be overlapped a minimum distance.The top sheet is foldedback and both the bottom sheet and the top sheet are primedwith an adhesive primer.The primer is allowed to flash off.Thetape adhesive is applied to the bottom sheet so that a minimumof the tape will extend out from under the top sheet when laidover the tape.The top sheet is allowed to lay flat over the tapeand the release paper is removed by pulling it at a 45 to 90degree angle,keeping the release paper flat to the surface of thebottom sheet.The seam area is then rolled with a silicone-sleeved roller.1.2.2 Cover Strip TapeThis technique requires the mem-brane to be overlapped a minimum distance.An area either sideof the seam edge is primed.The primer is allowed to flash off.The cover strip is applied with the adhesive side down,centered over the top sheet edge while removing the releasepaper as it proceeds along centered over the edge of the topsheet.The cover strip is then rolled with a silicone-sleevedroller.1.3 For nondestructive test methods,see Practice D4437/D4437M.1.4 This test method is applicable for seaming processesthat use tape adhesive as a seaming mechanism.1.5 Subsequent decisions as to seam acceptance criteria aremadeaccordingtothesite-specificcontractplans,specifications,and contractor quality control/contractor qualityassurance(CQC/CQA)documents.1.6 In case of a material-specific test method,this testmethod shall take precedence.1.7 Hazardous MaterialsAlways consult the proper mate-rial safety data sheets for any hazardous material used for theproper ventilation and protection.The use of the oven in thesetest methods,in this practice,may accelerate fume productionfrom the test specimen.1.8 The values stated in both inch-pound and SI units are tobe regarded separately as the standard.Values in parenthesesare for information only.1.9 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.1.10 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:2D413 Test Methods for Rubber PropertyAdhesion to Flex-ible SubstrateD638 Test Method for Tensile Properties of PlasticsD653 Terminology Relating to Soil,Rock,and ContainedFluidsD882 Test Method for Tensile Properties of Thin PlasticSheetingD4437/D4437M Practice for Nondestructive Testing(NDT)for Determining the Integrity of Seams Used in JoiningFlexible Polymeric Sheet Geomembranes1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.10 on Geomem-branes.Current edition approved Feb.1,2018.Published February 2018.Originallyapproved 2006.Last previous version approved 2011 as D7272 06(2011).DOI:10.1520/D7272-06R18.2For 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 D4439 Terminology for GeosyntheticsD5199 Test Method for Measuring the Nominal Thicknessof GeosyntheticsD5994/D599