ASTM_D_7700_-_15.pdf

Designation:D770015Standard Guide forSelecting Test Methods for Geomembrane Seams1This standard is issued under the fixed designation D7700;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 guide is intended for use as a summary of testmethods necessary to evaluate geomembrane seams.It isintended to guide geomembrane users toward the appropriateevaluation techniques to assess geomembrane seam quality.1.2 Geomembrane seams covered by this guide are:high-density polyethylene(HDPE),linear low-density polyethylene(LLDPE),very low-density polyethylene(VLDPE),flexiblepolypropylene(fPP),polyvinyl chloride(PVC),ethylene pro-pylene diene terpolymer(EPDM),prefabricated bituminousgeomembranes(PBGM),Ethylene Interpolymer Alloy(EIA)and reinforced geomembranes1.3 Although a significant effort has been made to gather alltypes of geomembranes and related evaluation techniqueswhich were on the market at the date of completion of thisdocument,some available materials and technologies mayhave been omitted.The information presented in this documentshall thus be considered to be non exhaustive.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4437 Practice for Non-destructive Testing(NDT)for De-termining the Integrity of Seams Used in Joining FlexiblePolymeric Sheet GeomembranesD4439 Terminology for GeosyntheticsD5641 Practice for Geomembrane Seam Evaluation byVacuum ChamberD5820 Practice for Pressurized Air Channel Evaluation ofDual Seamed GeomembranesD6214/D6214M Test Method for Determining the Integrityof Field Seams Used in Joining Geomembranes byChemical Fusion MethodsD6365 Practice for the Nondestructive Testing of Geomem-brane Seams using the Spark TestD6392 Test Method for Determining the Integrity of Nonre-inforced Geomembrane Seams Produced Using Thermo-Fusion MethodsD6747 Guide for Selection of Techniques for Electrical LeakLocation of Leaks in GeomembranesD7002 Practice for Electrical Leak Location on ExposedGeomembranes Using the Water Puddle MethodD7006 Practice for Ultrasonic Testing of GeomembranesD7007 Practices for Electrical Methods for Locating Leaksin Geomembranes Covered with Water or Earthen Mate-rialsD7056 Test Method for Determining the Tensile ShearStrength of Pre-Fabricated Bituminous GeomembraneSeamsD7177 Specification for Air Channel Evaluation of Polyvi-nyl Chloride(PVC)Dual Track Seamed GeomembranesD7272 Test Method for Determining the Integrity of SeamsUsed in Joining Geomembranes by Pre-manufacturedTaped MethodsD7408 Specification for Non Reinforced PVC(PolyvinylChloride)Geomembrane SeamsD7747 Test Method for Determining Integrity of SeamsProduced Using Thermo-Fusion Methods for ReinforcedGeomembranes by the Strip Tensile MethodD7749 Test Method for Determining Integrity of SeamsProduced Using Thermo-Fusion Methods for ReinforcedGeomembranes by the Grab Method3.Terminology3.1 Definitions:3.1.1 destructive technique,na method of seam testingrequiring that a sample be removed from the fabricated orinstalled geomembrane for further evaluation.1This 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 May 1,2015.Published May 2015.Originallyapproved in 2012.Last previous edition approved in 2012 as D770012.DOI:10.1520/D7700152For 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 States1 TABLE 1 Seam Evaluation Techniques and Their Applicability to Different Geomembrane MaterialsType of SeamEvaluationTechniqueASTM Test Method/Type ofGeomembraneNon-Reinforced PolyolefinGeomembranesNon ReinforcedPolyvinylChloride(PVC)andEthyleneInterpolymer Alloy(EIA)EthylenePropylene DieneTerpolymer(reinforced andnonreinforced)(EPDM)BituminousGeomembranes(PBGM)Other ReinforcedGeomembranesHDPEAll other types ofnonreinforcedgeomembranes(forexample,fPP,LLDPE,VLDPE)DestructiveD6214/D6214MField seams,chemi-cal fusion methodsX(see Note 1)X(see Note 1)D6392Nonreinf GM-SeamsThermo-Fusion MethXXXX(see Note 2)D7408PVC SeamXD7056BGM SeamsXD7272Taped seamsevaluationXD7747Reinforced GM,Strip