1、Designation: D450/D450M 07 (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
2、 of revision, 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 s
3、pecification 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 e
4、xact 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 international standard was developed in accor-dance with internationally recognized principles on standard-ization establishe
5、d 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:2D4 Test Method for Bitumen ContentD20 Test Method for Distillation o
6、f Road TarsD36/D36M Test 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 Materia
7、ls by DistillationD140/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for Sampling Asphalt MaterialsD2398 Test Method for Softening Point of Bitumen inEthylene Glycol (Ring-and-Ball) (Withdrawn 1984)3D2415 Test Method for Ash in Coal Tar and PitchD3461 Test Method for Softening Point of Asphalt and Pitch(Mettler Cup-and-Ball Metho
8、d)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 Manufacture4.1
9、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. Sampling
10、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/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 case
11、s where a disagreement exists 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 Waterpro
12、ofing and is the direct responsibility 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
13、: 10.1520/D0450_D0450M-07R18.2For 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.3The last approved version of th
14、is historical standard is referenced onwww.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 th
15、e Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.16.1.7 AshTest Method D2415.6.1.8 DistillationTest Method D20.7. Inspection and Certification7.1 Inspection and certif
16、ication of the material shall be asagreed upon between 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 conformitys
17、hall 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 of handling and shipment.9.2 Unless otherwise a
18、greed upon between the supplier andpurchaser, each container 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; dampp
19、roofing; 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 such patent rights, and the riskof
20、infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this st
21、andard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your
22、 views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by cont
23、acting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978
24、) 646-2600; http:/ 1 Physical Requirements of Coal-Tar Pitch for Built-Up Roofing, Dampproofing, and WaterproofingType I Type IIWater, max, % 0 0Specific gravity, 25/25C 1.22 to 1.34 1.22 to 1.34Softening point (ring-and-ball), C FA52 to 60126 to 14041 to 52106 to 126Flash point, Cleveland open cup,
25、 min, C F 190 374 175 347Total pitch soluble in carbon disulfide, % 72 to 85 72 to 85Ash, max, % 0.5 0.5Total distillate:0 to 300C 32 to 572F, max, % 10 100 to 315C 32 to 599F, max, % . .0 to 360C 32 to 680F, max, % . .Specific gravity of distillate from 0 to 32 to300C 572F, min, 38/15.5C1.03 1.03Softening point (ring-and-ball) of residue fromdistillation to 300C 572F, max, C F80 176 80 176AThese values are 2C higher if Test Method D2398 (ring and ball in ethylene glycol) is used in place of the specified Test Method D36/D36M (ring and ball in water).D450/D450M 07 (2018)2
