1、Designation:D243/D243M14Standard Test Method forResidue of Specified Penetration1This standard is issued under the fixed designation D243/D243M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in par
2、entheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method is used to thermally reduce cutbackasphalt,a road oil or a semisolid asphalt,having a penetrationgreater than 100,to a residue of spec
3、ified penetration.It isprimarily used with slow-curing cutback asphalt as specified inSpecification D2026.1.2 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 u
4、sed independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 WarningMercury has been designated by the UnitedStates Environmental ProtectionAgency(EPA)and many stateagencies as a hazardous material that can cause central nervoussystem,kidney
5、and liver damage.Mercury,or its vapor,may behazardous to health and corrosive to materials.Caution shouldbe taken when handling mercury and mercury containingproducts.See the applicable product Material Safety DataSheet(MSDS)for details and EPAs websitehttp:/www.epa.gov/mercury/for additional inform
6、ation.Usersshould be aware that selling mercury,mercury-containingproducts,or both,into your state may be prohibited by statelaw.1.4 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 ap
7、pro-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 MaterialsD2026 Specification for Cutback Asphalt(Slow-CuringType)E1 Specification for ASTM Liquid-in-G
8、lass ThermometersE77 Test Method for Inspection and Verification of Ther-mometersE220 Test Method for Calibration of Thermocouples ByComparison TechniquesE644 Test Methods for Testing Industrial Resistance Ther-mometersE1137/E1137M Specification for Industrial Platinum Resis-tance Thermometers3.Summ
9、ary of Test Method3.1 The material to be tested is rapidly heated to 249C480F and maintained at 249 to 260C 480 to 500F duringevaporation of the volatiles.Penetration of the residue isdetermined and if not within the specified limits,the evapora-tion procedure is repeated.Change in sample mass is us
10、ed tocalculate the percentage of residue having the specified pen-etration.4.Significance and Use4.1 This test method is used to determine the percentage ofresidue having a specified penetration at 100 g/5 s at 25C77F.This test method provides a residue for quality controlor for use in other tests a
11、s desired.5.Apparatus5.1 The apparatus shall consist of a container,heating bath,hot plate,and thermometric device,with necessary accessoryapparatus as follows:5.1.1 ContainerThe container in which the sample is to betested shall be a flat-bottom,cylindrical seamless tin box,approximately 70 mm in d
12、iameter and 45 mm in depth.NOTE1Containers known in the pharmaceutical industry as seamless“ointment boxes”may be obtained in dimensions conforming to the aboverequirements.5.1.2 Heating BathThe heating bath shall be a cast-ironair bath,or equivalent,permitting the immersion of thecontainer to a dep
13、th of 32 6 5 mm through an opening 3 6 2mm larger in diameter than the container.It shall support thecontainer 6 6 2 mm above the hot plate,and with at least 6.41This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommit
14、tee D04.46 onDurability and Distillation Tests.Current edition approved June 1,2014.Published June 2014.Originallyapproved in 1926.Last previous edition approved in 2008 as D243 08.DOI:10.1520/D0243_D0243M-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer
15、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 mm free air space between the sides of the cont
16、ainer and of theair bath below the opening.A suitable air bath is shown in Fig.1.35.1.3 Hot PlateThe air bath shall be heated upon asuitably mounted hot plate,heated either electrically or bymeans of a gas flame.The plate shall be capable of maintainingthe sample continuously at the required temperature,andapparatus necessary to fulfill this requirement,such as arheostat or gas pressure regulator,shall be provided.5.1.4 ThermometerA thermometer for measuring the tem-perature of the sample.The th
