1、Designation: D 946 82 (Reapproved 2005)Standard Specification forPenetration-Graded Asphalt Cement for Use in PavementConstruction1This standard is issued under the fixed designation D 946; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specificatio
3、n covers asphalt cement for use in theconstruction of pavements.1.2 This specification covers the following penetrationgrades:4050, 120150, and6070, 200300.85100,2. Referenced Documents2.1 ASTM Standards:2D5 Test Method for Penetration of Bituminous MaterialsD92 Test Method for Flash and Fire Points
4、 by ClevelandOpen CupD113 Test Method for Ductility of Bituminous MaterialsD 140 Practice for Sampling Bituminous MaterialsD 1754 Test Method for Effect of Heat and Air on AsphalticMaterials (Thin-Film Oven Test)D 2042 Test Method for Solubility of Asphalt Materials inTrichloroethylene3. Manufacture
5、3.1 Asphalt cement shall be prepared by the refining ofcrude petroleum by suitable methods.4. Properties4.1 The asphalt cement shall be homogeneous and shall notfoam when heated to 347F (174C).4.2 The various grades of asphalt cement shall conform tothe requirements prescribed in Table 1.5. Methods
6、of Sampling and Testing5.1 The material shall be sampled and the properties enu-merated in this specification shall be determined in accordancewith the following ASTM methods:5.1.1 SamplingPractice D 140.5.1.2 PenetrationTest Method D5.5.1.3 Flash PointTest Method D92.5.1.4 DuctilityTest Method D113
7、.5.1.5 Thin Film Oven TestTest Method D 1754.5.1.6 Solubility in TrichloroethyleneTest Method D 2042.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D 04.40 onAsphalt Specifications.Current edition appro
8、ved Dec. 1, 2005. Published December 2005. Originallyapproved in 1947. Last previous edition approved in 1999 as D 946 82 (1999).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informati
9、on, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any ite
10、m mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical comm
11、ittee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a m
12、eeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive
13、, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting 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
14、).TABLE 1 Requirements for Asphalt Cement for Use in Pavement ConstructionPenetration Grade4050 6070 85100 120150 200300Min Max Min Max Min Max Min Max Min MaxPenetration at 77F (25C) 100 g, 5 s 40 50 60 70 85 100 120 150 200 300Flash point, F (Cleveland open cup) 450 . 450 . 450 . 425 . 350 .Ductil
15、ity at 77F (25C) 5 cm/min, cm 100 . 100 . 100 . 100 . 100A.Solubility in trichloroethylene, % 99.0 . 99.0 . 99.0 . 99.0 . 99.0 .Retained penetration after thin-film oven test, % 55 + . 52 + . 47 + . 42 + . 37 + .Ductility at 77F (25C) 5 cm/min, cm after thin-filmoven test test. . 50 . 75 . 100 . 100A.AIf ductility at 77F (25C) is less than 100 cm, material will be accepted if ductility at 60F (15.5C) is 100 cm minimum at the pull rate of 5 cm/min.D 946 82 (2005)2
