ASTM_D_7654_-_D_7654M_-_10.pdf

Designation:D7654/D7654M10Standard Specification forAsphalt Used in Roofing Measured by Dynamic ShearRheometer1This standard is issued under the fixed designation D7654/D7654M;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 specification covers two types of asphalt intendedfor use in built-up roof construction,construction of somemodified bitumen systems,construction of bituminous vaporretarder systems,and for adhering insulation boards used invarious types of roof systems.The specification is intended forgeneral classification purposes only and does not imply restric-tions on the slope at which an asphalt must be used.1.2 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.1.3 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:2D5 Test Method for Penetration of Bituminous MaterialsD92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD140 Practice for Sampling Bituminous MaterialsD1079 Terminology Relating to Roofing and WaterproofingD2042 Test Method for Solubility of Asphalt Materials inTrichloroethyleneD6510 Guide for Selection of Asphalt Used in Built-UpRoofing SystemsD7175 Test Method for Determining the Rheological Prop-erties of Asphalt Binder Using a Dynamic Shear Rheom-eter3.Terminology3.1 For definition of terms used in this specification,refer toTerminology D1079.3.2 Definitions:3.3 Viscosity,Eta*70C 158F,Pa.s3.3.1 Definition:Eta*=G*/Angular Velocity.Complexdynamic shear viscosity is the ratio of the complex shearmodulus(G*)divided by the rate of shear in radians/second.Inthe SI,the unit of viscosity is in the pascal second(Pa.s).4.Classification4.1 Materials covered by this specification are of two types:4.1.1 Type III(VG).4.1.2 Type IV(VG).5.Materials and Manufacture5.1 The asphalt shall be prepared from crude petroleum.6.Physical Properties6.1 Asphalts shall be homogeneous and free of water.6.2 Asphalts of each type must conform to the physicalproperties described in Table 1.7.Sampling7.1 Sample the material and determine the properties enu-merated in this specification in accordance with the followingmethods:7.1.1 SamplingPractice D140.7.1.2 Flash PointTest Method D92.7.1.3 PenetrationTest Method D5.7.1.4 SolubilityTest Method D2042.7.1.5 Rheological Properties of Asphalt Binder Using aDynamic Shear RheometerTest Method D7175.7.1.5.1 Handling Protocol:(1)Heat samples to 190 6 5C 375 6 10F for preparingtest specimen.(2)Hold samples under heat for a period of not more than1.5 h.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.03on Surfacing and Bituminous Materials for Membrane Waterproofing and Built-upRoofing.Current edition approved Aug.1,2010.Published September 2010.DOI:10.1520/D7654_D7654M-10.2For 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 States1(3)Pour samples on plate to equilibrate at test temperaturefor 5 6 0.5 min.(4)Test shall begin no later than 10 min after samplereaches thermal equilibrium(Test Method D7175,AppendixX4)7.1.5.2 Testing Protocol:(1)Test samples at 70C 158F.(2)Plate Size=25 mm.(3)Strain=1%.(4)Gap=2 mm.(5)Frequency=1.59 Hz.8.Precision and Bias8.1 The precision of this test method is based on aninterlaboratory study conducted in 2007.3Results in this studywere obtained from five laboratories,testing the viscosity of 16different asphalt materials at three different temperatures.Every“test result”reported represents an individual determi-nation.Each participating laboratory was asked to report threereplicate test results for every material.8.2 RepeatabilityTwo test results obtained within onelaboratory shall be judged not equivalent if they differ by morethan the“r”value for that material;“r”is the intervalrepresenting the critical difference between two test results forthe same material,obtained by the same operator using thesame equipment on the same day in the same laboratory.8.3 ReproducibilityTwo test