1、Designation:D4866/D4866M88(Reapproved 2017)Standard Performance Specification forCoal Tar Pitch Emulsion Pavement Sealer Mix FormulationsContaining Mineral Aggregates and Optional PolymericAdmixtures1This standard is issued under the fixed designation D4866/D4866M;the number immediately following th
2、e designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This performance specification
3、covers mixtures of emul-sified coal-tar pitch(mineral colloid type),mineral aggregates,and optional polymeric admixtures that are used as a weather-protective and straight aliphatic hydrocarbon resistant coatingsover bituminous pavements of airports,parking areas,anddriveways.1.2 The values stated i
4、n either SI units or inch-pound unitsare to be regarded separately as standard.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.1.3 The follow
5、ing safety hazards statement applies only tothe test method portion,Section 6,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 establish appropriate safety and healthpracti
6、ces and determine the applicability of regulatory limita-tions prior to use.1.4 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,Guides and R
7、ecom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D466 Test Methods for Films Deposited From BituminousEmulsions(Withdrawn 1998)3D2939 Test Methods for Emulsified Bitumens Used asProtective Coatings(Withdrawn 201
8、2)3D3699 Specification for KerosineD5727/D5727M Specification for Emulsified Refined CoalTar(Mineral Colloid Type)3.Materials3.1 Ratios of component materials that make up the mixtureto be tested,as well as detailed specifications for the mineralaggregate and optional polymeric admixture shall be as
9、 agreedupon between the purchaser and the seller.3.2 The base coal-tar emulsion shall meet the requirementsof Specification D5727/D5727M.3.3 The mineral aggregate shall be either a natural ormanufactured product composed of clean,hard,durable,un-coated particles,free from dirt,organic matter,and oth
10、erobjectionable substances.3.4 The optional polymeric admixture shall be any polymeror mixtures thereof,with added compounding ingredients ofsuch nature and quality that will allow the admixture to becompatible with and enhance the performance of mineralaggregate modified coal-tar emulsion pavement
11、sealers.3.5 The water used in mixing shall be potable and free fromharmful soluble salts.The temperature of the water shall be atleast 10C 50F.4.Physical Requirements4.1 The mixture as applied shall be of uniform consistencyand suitable for application to properly prepared or primedsurfaces at a rat
12、e of 0.4 to 1.0 L/m21.0 to 2.5 gal/100 ft2without appreciable drainage on inclines up to 0.8%0.1in./ft.NOTE1Pavement and ambient temperature should be not less than7C 45F at the time of application and for at least 12 h thereafter,withno precipitation of rain,snow,and so forth,until the emulsion has
13、 dried.NOTE2When these materials are applied in commercial quantities the1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.09on Bituminous Emulsions.Current edition approved May 1,2017.Published May 20
14、17.Originallyapproved in 1988.Last previous edition approved in 2011 as D4866/D4866M 88(2011)1.DOI:10.1520/D4866_D4866M-88R17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refe
15、r to the standards Document Summary page onthe ASTM website.3The last approved version of this 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 acc
16、ordance with 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.1 purchaser or inspector should observe the mixing to ensure that after eachstep no coagulation or separation of the ingredients occurs and that themix has a good application consistency.When possible,a small batchshould be mixed and
