ASTM_D_7105_-_D_7105M_-_06_2019e1.pdf

Designation:D7105/D7105M06(Reapproved 2019)1Standard Test Method forDetermining the Adhesive and Cohesive Strength BetweenMaterials in Roofing or Waterproofing Membranes andSystems1This standard is issued under the fixed designation D7105/D7105M;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 corrected in May 2019.1.Scope1.1 This test method measures the force needed to causeseparation of the components of a roofing or a waterproofingmembrane system normal(perpendicular)to the plane of themembrane.The separation may be adhesive at the weakestbond,or cohesive within the weakest material.If the failure iscohesive,the adhesive strength is greater than the cohesivestrength.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 The 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:2D312/D312M Specification for Asphalt Used in RoofingD1079 Terminology Relating to Roofing and Waterproofing3.Terminology3.1 Definitions:3.1.1 See D1079 for definitions of terms used in this testmethod.4.Summary of Test Method4.1 This test method subjects specimens from the laboratoryprepared or field samples to a force perpendicular to the planeof the membrane.The test measures:4.1.1 The cohesive strength of an adhesive layer whenseparation takes place within the adhesive layer,4.1.2 The adhesive strength when the separation takes placeat an adhered surface,or4.1.3 The cohesive strength of the weakest material whenthe separation takes place within a material other than anadhesive.5.Significance and Use5.1 This test method is useful to define the force needed tocause separation of the roofing or waterproofing system orcomponents perpendicular to the plane of the system,and todefine the weakest plane in the system.6.Apparatus6.1 Testing MachineA universal testing machine withautomatic load and strain equipment and a constant speed crosshead movement of 0.8 mm/s 2 in./min.61%.6.2 Mounting ClipsThe specimen mounting clips(forsmall specimens)are 50 mm 2 in.square perforated galva-nized steel,0.5 mm 0.020 in.thick,with at least a 75 mm 3in.long steel pin 2.7 mm 12 gauge diameter.The pin shall befastened to the center of the plate perpendicular to the plane ofthe plate.6.3 Mounting BlocksThe wood or metal specimen blocks(for larger specimens)are 150 mm 6 in.square and 13 to 32mm 12to 1-14in.thick(depending on the force to be1This 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 May 1,2019.Published June 2019.Originallyapproved in 2006.Last previous edition approved in 2013 as D7105 06(2013).DOI:10.1520/D7105_D7105M-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 measured),equipped with a hook in the center of each block topermit attachment in the testing machine.If desired,roundblocks with at least a 45 mm 134in.diameter and with acentral hook shall not be prohibited.6.4 Clip or Mounting AdhesiveHot,steep asphalt D312/D312M Type III has been effective for many roofing materials.For some materials,other adhesives shall not be prohibited.Consider using the adhesive recommended by the manufac-turer of the materials to be tested.The adhesive shall be quicksetti