1、Designation:D3320/D3320M18Standard Specification forEmulsified Coal-Tar Pitch(Mineral Colloid Type)1This standard is issued under the fixed designation D3320/D3320M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last rev
2、ision.A number in parentheses 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 mineral-colloid-stab
3、ilized,emulsified coal-tar pitch suitable for use as a weather-protective and aliphatic-solvent resistant coating over bitumi-nous pavements of airports,parking areas,and driveways.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated
4、 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 following precautionary caveat pertains only to thetest method portion,Section 6,of this specification
5、: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,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.1.4 This in
6、ternational 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 Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)C
7、ommittee.2.Referenced Documents2.1 ASTM Standards:2D140/D140M Practice for Sampling Asphalt MaterialsD490 Specification for Road TarD529 Practice for Enclosed Carbon-Arc Exposures of Bitu-minous Materials(Withdrawn 2013)3D2939 Test Methods for Emulsified Bitumens Used asProtective Coatings(Withdrawn
8、 2012)3D3699 Specification for Kerosine2.2 Federal Specification:4VV-K-211 Kerosene3.Materials and Manufacture3.1 The emulsion shall be made using tars having viscositiesof RT-11 or higher.The tars shall conform to the requirementsof Specification D490.3.2 Mineral filler(mineral colloids)shall consi
9、st of finelyground clay,silica,or other inert inorganic materials.(WarningBentonitic or highly expansive clays may causedrying and shrinkage problems,which may affect the durabilityof the pavement sealer.)3.3 When specified,the emulsion shall be fortified withantifreeze.4.Physical Requirements4.1 Th
10、e emulsion shall be of suitable consistency for appli-cation by brush,squeegee,roller,or suitable spray equipment.The material shall be used as received.It shall not be dilutedwith water or thinned by heating.It shall bond firmly toproperly prepared damp or primed surfaces.NOTE1Pavement and ambient
11、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 dried.4.2 The product shall be of smooth,uniform consistencywithout settlement or segregation in storage to the extent thatit ca
12、nnot be readily dispersed by ordinary stirring.4.3 The material,after stirring to homogeneity,shall besuitable for application by the selected method in single coatsof approximately 0.3 to 0.4 L/m234to 1 gal/100 ft2 withoutappreciable drainage on inclines up to 0.8%0.1 in./ft.1This specification is
13、under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.09on Bituminous Emulsions.Current edition approved Oct.1,2018.Published November 2018.Originallyapproved in 1974.Last previous edition approved in 2004 as D3320 00(2004)1,whi
14、ch was withdrawn in July 2013 and reinstated in October 2018.DOI:10.1520/D3320_D3320M-18.2For 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 p
15、age onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Obsolete.Previously available from Standardization Documents Order Desk,Bldg.4 Section D,700 Robbins Ave.Philadelphia,PA 19111-5094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Driv
16、e,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance 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 4.4 The material shall conform to the physical propertiesprescribed in Table 1 prior to fortification with antifreeze.5.Sampl
