1、Designation:D450/D450M07(Reapproved 2018)Standard Specification forCoal-Tar Pitch Used in Roofing,Dampproofing,andWaterproofing1This standard is issued under the fixed designation D450/D450M;the number immediately following the designation indicates the yearof original adoption or,in the case of rev
2、ision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification
3、covers two types of coal-tar pitchsuitable for use in the construction of built-up roofing,dampproofing,and membrane waterproofing systems.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 equivalent
4、s;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision
5、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:2D4 Test Method for Bitumen ContentD20 Test Method for Distillation of Road TarsD36/D36M Te
6、st Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D70 Test Method for Density of Semi-Solid Asphalt Binder(Pycnometer Method)D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD95 Test Method for Water in Petroleum Products andBituminous Materials by DistillationD140
7、/D140M Practice for Sampling Asphalt MaterialsD2398 Test Method for Softening Point of Bitumen inEthylene Glycol(Ring-and-Ball)(Withdrawn 1984)3D2415 Test Method for Ash in Coal Tar and PitchD3461 Test Method for Softening Point ofAsphalt and Pitch(Mettler Cup-and-Ball Method)3.Classification3.1 Coa
8、l-tar pitches covered by this specification includetwo types:3.1.1 Type ISuitable for use in built-up roofing,dampproofing,and membrane waterproofing systems.3.1.2 Type IISuitable for use in dampproofing and inmembrane waterproofing systems.4.Materials and Manufacture4.1 Coal-tar pitch shall be prep
9、ared from selected crudesusing suitable refining processes to conform to the applicablespecifications.5.Physical Requirements5.1 Coal-tar pitch shall be homogeneous and free of water.5.2 Each type shall conform to the physical propertiesprescribed in Table 1.6.Sampling and Test Methods6.1 Sample the
10、 material and determine the properties enu-merated in this specification in accordance with the followingmethods:6.1.1 SamplingPractice D140/D140M.6.1.2 WaterTest Method D95.6.1.3 Specific GravityTest Method D70.6.1.4 Softening PointTest Method D36/D36M or D3461.In cases where a disagreement exists
11、between the purchaserand the seller,Test Method D36/D36M shall be used as thereferee method.6.1.5 Flash PointTest Method D92.6.1.6 Pitch Soluble in Carbon DisulfideTest Method D4.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct respons
12、ibility of Subcommittee D08.03on Surfacing and Bituminous Materials for Membrane Waterproofing and Built-upRoofing.Current edition approved May 1,2018.Published June 2018.Originallyapproved in 1937.Last previous edition approved in 2013 as D450/D450M 07(2013)1.DOI:10.1520/D0450_D0450M-07R18.2For ref
13、erenced 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.3The last approved version of this historical standard is referenced onwww
14、.astm.org.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
15、International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.1.7 AshTest Method D2415.6.1.8 DistillationTest Method D20.7.Inspection and Certification7.1 Inspection and certification of the material shall be asagreed upon bet
16、ween the purchaser and the seller.Specificrequirements shall be made part of the purchase contract.8.Rejection and Rehearing8.1 If the results of any test do not conform to the require-ments of this specification,retesting to determine conformityshall be permitted to be performed as agreed upon between thepurchaser and the seller.9.Packaging and Package Marking9.1 The material shall be suitably packaged to permitacceptance by the carrier and to afford adequate protectionfrom the normal hazards o
