1、Designation:D2397/D2397M20Standard Specification forCationic Emulsified Asphalt1This standard is issued under the fixed designation D2397/D2397M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in pa
2、rentheses indicates the year of lastreapproval.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 covers seven grades of cationic emul-sified asp
3、halt for use in pavement construction in the mannerdesignated.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall
4、 beused independently of the other,and values from the twosystems shall not be combined.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,
5、Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D5/D5M Test Method for Penetration of Bituminous Mate-rialsD113 Test Method for Ductility of Asphalt MaterialsD140/D140M Practice for Sampling Asphalt
6、 MaterialsD244 Test Methods and Practices for Emulsified AsphaltsD2042 Test Method for Solubility of Asphalt Materials inTrichloroethyleneD3910 Practices for Design,Testing,and Construction ofSlurry SealD6930 Test Method for Settlement and Storage Stability ofEmulsified AsphaltsD6933 Test Method for
7、 Oversized Particles in EmulsifiedAsphalts(Sieve Test)D6935 Test Method for Determining Cement Mixing ofEmulsified AsphaltD6936 Test Method for Determining Demulsibility of Emul-sified AsphaltD6997 Test Method for Distillation of Emulsified AsphaltD7226 Test Method for Determining the Viscosity of E
8、mul-sified Asphalts Using a Rotational Paddle ViscometerD7402 Practice for Identifying Cationic Emulsified AsphaltsD7496 Test Method for Viscosity of Emulsified Asphalt bySaybolt Furol ViscometerD7553 Test Method for Solubility of Asphalt Materials inN-Propyl BromideD8078 Test Method for Ash Content
9、 of Asphalt and Emul-sified Asphalt Residues3.Requirements3.1 The emulsified asphalt shall be tested within 14 days ofdelivery.The emulsified asphalt shall be homogeneous afterthorough mixing,provided separation has not been caused byfreezing.Emulsions separated by freezing shall not be tested.3.2 E
10、mulsified asphalt shall conform to the requirementsprescribed in Table 1.Specify the test method to be used.Specify either Test Method D7226 or D7496.4.Sampling4.1 Samples of emulsified asphalt shall be taken in accor-dance with Practice D140/D140M.4.2 Samples shall be stored in clean,airtight,seale
11、d con-tainers at a temperature of not less than 4 C 39.2 F untiltested.5.Test Methods5.1 The properties of the emulsified asphalts given in Table1 shall be determined in accordance with the following ASTMstandards:5.1.1 ViscosityTest Method D7496 or D7226 for Table 1.5.1.2 Storage StabilityTest Meth
12、od D6930.5.1.3 DemulsibilityTest Method D6936.5.1.4 Coating Ability and Water ResistanceTest MethodsD244.5.1.5 Particle ChargePractice D7402.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.41 onEmuls
13、ified Asphalt Specifications.Current edition approved July 1,2020.Published July 2020.Originally approvedin 1965.Last previous edition approved in 2019 as D2397/D2397M 19a.DOI:10.1520/D2397_D2397M-20.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service a
14、t serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance wi
15、th internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.TABLE 1 Requirements for Cationic Emulsified
16、 AsphaltNOTE1CQS-1h emulsions shall meet the requirements outlined in Practices D3910.NOTE2CQS-1h is used for quick-set slurry seal systems.NOTE3For viscosity,specify either Test Method D7226 or D7496.NOTE4Specify either ash content(Test Method D8078)or solubility(Test Method D2042 or D7553).Rapid-SettingMedium-SettingSlow-SettingQuick-SettingTypeCRS-1CRS-2CMS-2CMS-2hCSS-1CSS-1hCQS-1hGrademinmaxminmaxminmaxminmaxminmaxminmaxminmaxTests on Emulsified Asphalts:Viscosity,Saybolt Furol at 25 C 77 F
