1、Designation:D615415Standard Specification forChemically Modified Asphalt Cement for Use in PavementConstruction1This standard is issued under the fixed designation D6154;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers asphalt cements that have beenmodified by the addition of a chemical gellant.It was devel-oped to pr
3、ovide a reference for specifying chemically modifiedasphalt cement and reflects the properties of currently availablecommercial products.The tests are intended to measure degreeof modification not performance characteristics.This is notintended to be a performancebased specification.1.2 Chemically m
4、odified asphalt cements are normally pro-duced by addition of a chemical stabilizer.However,anyasphalt modifier may be used that will give the required testresults when blended with the desired asphalt.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are
5、included in thisstandard.1.4 The following precautionary statement pertains to thetest method portion only,Section 5,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establ
6、ish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D5 Test Method for Penetration of Bituminous MaterialsD36 Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D92 Test Method fo
7、r Flash and Fire Points by ClevelandOpen Cup TesterD140 Practice for Sampling Bituminous MaterialsD1754 Test Method for Effects of Heat and Air on AsphalticMaterials(Thin-Film Oven Test)D2042 Test Method for Solubility of Asphalt Materials inTrichloroethyleneD4957 Test Method forApparent Viscosity o
8、fAsphalt Emul-sion Residues and Non-Newtonian Bitumens by VacuumCapillary ViscometerD7553 Test Method for Solubility of Asphalt Materials inN-Propyl Bromide3.Materials and Manufacture3.1 The asphalt cement used to prepare the chemicallymodified asphalt cement shall be prepared by the refining ofcrud
9、e petroleum by suitable methods.4.Physical Properties4.1 The chemically modified asphalt cement shall behomogeneous,free from water,and shall not foam when heatedto 180C.4.2 The chemically modified asphalt cement shall conformto the requirements of Table 1.5.Methods of Sampling and Testing5.1 Sample
10、 and test the chemically modified asphalt cementin accordance with the following methods:5.1.1 SamplingSee Practice D140.5.1.2 PenetrationSee Test Method D5.5.1.3 Viscosity at 60CSee Test Method D4957.5.1.4 Viscosity at 135CSee Test Method D4957.5.1.5 Flash Point,Cleveland Open CupSee Test MethodD92
11、.5.1.6 SolubilitySee Test Method D2042 or Test MethodD7553.5.1.7 Softening PointSee Test Method D36.5.1.8 Thin-Film Oven TestSee Test Method D1754.6.Keywords6.1 chemical gellant;chemical stabilizer;Chemically Modi-fied Asphalt Cement;viscosity1This specification is under the jurisdiction of ASTM Com
12、mittee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.40 onAsphalt Specifications.Current edition approved Jan.1,2015.Published February 2015.Originallyapproved in 1997.Last previous edition approved in 2014 as D6154 09(2014).DOI:10.1520/D6154-15.2For referenced
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