1、Designation:D450/D450M07(Reapproved 2013)1Standard 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 re
2、vision,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 Department of Defense.1NOTEUnits information was editor
3、ially corrected in January 2013.1.Scope1.1 This specification 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 standa
4、rd.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.2.Referenced Documents2.1 ASTM Standards:2D4 Test Method for Bitumen ContentD20 Test Metho
5、d for Distillation of Road TarsD36 Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D70 Test Method for Density of Semi-Solid BituminousMaterials(Pycnometer Method)D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD95 Test Method for Water in Petroleum Products a
6、ndBituminous Materials by DistillationD140 Practice for Sampling Bituminous MaterialsD2398 Test Method for Softening Point of Bitumen inEthylene Glycol(Ring-and-Ball)(Withdrawn 1984)3D2415 Test Method for Ash in Coal Tar and PitchD3461 Test Method for Softening Point ofAsphalt and Pitch(Mettler Cup-
7、and-Ball Method)3.Classification3.1 Coal-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 Manu
8、facture4.1 Coal-tar pitch shall be prepared 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.
9、Sampling and Test Methods6.1 Sample the material and determine the properties enu-merated in this specification in accordance with the followingmethods:6.1.1 SamplingPractice D140.6.1.2 WaterTest Method D95.6.1.3 Specific GravityTest Method D70.6.1.4 Softening PointTest Method D36 or D3461.In casesw
10、here a disagreement exists between the purchaser and theseller,Test Method D36 shall be used as the referee method.6.1.5 Flash PointTest Method D92.6.1.6 Pitch Soluble in Carbon DisulfideTest Method D4.6.1.7 AshTest Method D2415.6.1.8 DistillationTest Method D20.7.Inspection and Certification7.1 Ins
11、pection and certification of the material shall be asagreed upon between the purchaser and the seller.Specificrequirements shall be made part of the purchase contract.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of S
12、ubcommittee D08.03on Surfacing and Bituminous Materials for Membrane Waterproofing and Built-upRoofing.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1937.Last previous edition approved in 2007 as D450 07.DOI:10.1520/D0450_D0450M-07R13E01.2For referenced ASTM standa
13、rds,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.astm.org.Copyright
14、 ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 be
15、tween 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 of handling and shipment.9.2 Unless otherwise agreed upon between the supplier andpurchaser,each co
16、ntainer or bill of lading on bulk shipmentsshall be plainly marked with the name and brand of themanufacturer or seller,the ASTM designation,flash point,andequiviscous temperature(EVT)for application.10.Keywords10.1 built-up;coal tar;dampproofing;roofing;waterproof-ingASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any