1、Designation: D6945/D6945M 03 (Reapproved 2017)Standard Specification forEmulsified Refined Coal-Tar (Ready to Use, CommercialGrade)1This standard is issued under the fixed designation D6945/D6945M; the number immediately following the designation indicates theyear of original adoption or, in the cas
2、e 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 specification covers mineral-colloid-stabilized,emulsified refined coal tar suitable f
3、or use as a weather-protective and petroleum (aliphatic) solvent resistant coating.This product is typically applied to commercial lots and otherlow speed bituminous concrete pavements suitable for protec-tion.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately
4、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 This standard does not purport to address all of thesafety concerns, if a
5、ny, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.1.4 This international standard was developed in accor-dance with internationally recognize
6、d 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) Committee.2. Referenced Documents2.1 ASTM Standards:2C136/C136M Test Method fo
7、r Sieve Analysis of Fine andCoarse AggregatesC142/C142M Test Method for Clay Lumps and FriableParticles in AggregatesD140/D140M Practice for Sampling Asphalt MaterialsD490 Specification for Road TarD2939 Test Methods for Emulsified Bitumens Used asProtective Coatings (Withdrawn 2012)3D3423/D3423M Pr
8、actice for Application of EmulsifiedCoal-Tar Pitch (Mineral Colloid Type)D5727/D5727M Specification for Emulsified Refined CoalTar (Mineral Colloid Type)3. Terminology3.1 The refined coal tar emulsion mixed at the contractorsyard or at the job site shall meet the requirements of Specifi-cation D5727
9、/D5727M. Mixture Types I and II (see AppendixA of Practice D3423/D3423M for standard definition of terms)are described below:3.1.1 Type I materiala mixture of refined coal tar emul-sion meeting Specification D5727/D5727M, water, and aggre-gate.3.1.2 Type II materiala mixture of refined coal tar emul
10、-sion meeting Specification D5727/D5727M, water, aggregate,and additive.4. Classification4.1 This specification is designed to give specifying authori-ties the information necessary to ensure that the appropriatebase refined coal tar emulsion mixtures are specified forprotecting bituminous concrete
11、pavements where fuel resis-tance is required.4.2 Normal aggregate loadings for Type I materials shouldrange from 0.360 to 0.600 kg/L3 to 5 lb/gal. Type II materialscan have slightly higher loadings of aggregate; however,aggregate loadings in excess of 0.720 kg/L 6 lb/gal arestrongly discouraged.NOTE
12、 1Several researchers have shown that high aggregate loadingsresult in a lack of fuel resistance as determined by the Resistance toKerosene test according to Test Methods D2939. Poor adhesion may alsooccur with high sand loadings.5. Materials and Manufacture5.1 Base Refined Coal Tar EmulsionThis emu
13、lsion shallbe made using binders prepared from a high temperature1This 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 2017. Or
14、iginallyapproved in 2003. Last previous edition approved in 2011 as D6945/D6945M 03(2011)1. DOI: 10.1520/D6945_D6945M-03R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, r
15、efer 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 develope
16、d 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.1refined coal tar confo
17、rming to the requirements of SpecificationD490 for RT11 or higher. The use of oil and water gas tar is notallowed. The base refined coal tar emulsion shall be inaccordance with all requirements of Specification D5727/D5727M.5.2 AggregateThe aggregate shall be either a natural ormanufactured (boiler
18、slag has been used successfully) angularaggregate composed of clean, hard, durable particles free ofclay and other objectionable material when tested in accor-dance with Test Method C142/C142M. (Boiler slag has beenused successfully.)NOTE 2It is recommended that this aggregate meet the gradationgive
19、n in Table 1, when tested in accordance with Test Method C136/C136M.5.3 AdditiveIn the case of Type II material, the additiveshall be approved by the base refined coal tar emulsionmanufacturer.6. Performance Requirements6.1 Type I CompositionThe refined coal tar emulsion sealcoat shall consist of a
20、mixture of refined coal tar emulsion,water, and aggregate and be proportioned within the ranges asshown in Table 2. The composition shall have written approvalof the refined coal tar emulsion manufacturer.6.2 Type II CompositionThe refined coal tar emulsionslurry seal coat shall consist of a mixture
21、 of refined coal taremulsion, water, aggregate, and additive and be proportionedwithin the ranges as shown in Table 3. The composition shallhave written approval of the local coal tar emulsion manufac-turer.6.3 Mixture TestingPrior to application, the contractorshall submit samples of component mate
22、rials for the proposedmix in accordance with the terms of the agreement between thecontractor and owner/related parties. The samples shall beblended according to selected proportions as given in theappropriate table, either Table 2 or Table 3, and tested forconformance with Table 4 requirements, for
23、 the appropriatetype of mixture. The samples shall be tested by a laboratorydesignated by the owner/related parties.6.3.1 Aggregate Verification TestPeriodic samples of mix-ture being applied at the job site shall be taken for mix designverification in accordance with Test Methods D2939. In orderto
24、verify that the proper amount of aggregate specified inTables 2 and 3 is contained in the mixture, samples of mixturebeing applied at the job site shall be taken for aggregate contentverification in accordance with Test Methods D2939.6.4 The manufacturer shall approve the refined coal taremulsion as
25、 to the specific composition numbers to be used inthe mix design.7. Other Requirements7.1 Both mixture types shall be of suitable consistency forapplication by brush, squeegee, roller, or suitable spray equip-ment without heating and shall bond to properly prepared dampor primed surfaces.7.2 The mix
26、ture, after stirring to homogeneity, shall besuitable for application by the selected method in single coatswithout appreciable drainage on inclines up to 0.8 %.7.3 The mixture shall conform to the physical propertiesprescribed in Table 4. When the mixture fails any of the givenrequirements, it shal
27、l be reformulated and retested for compli-ance.8. Sampling8.1 Sample in accordance with Practice D140/D140M andTest Methods D2939.TABLE 1 Gradation of AggregatesASieve SizePercent PassingCourse Medium Fine1.18 mm No. 16 100 100 1000.850 mm No. 20 85-100 98-100 1000.600 mm No. 30 25-85 85-100 98-1000
28、.425 mm No. 40 5-25 25-85 85-1000.300 mm No. 50 2-10 5-25 25-850.212 mm No. 70 - 2-10 5-250.150 mm No. 100 0-2 0-4 2-100.106 mm No. 140 - 0-2 0-2ATable 1 allows three choices of aggregate gradation. In either case, the refinedcoal tar emulsion manufacturer shall give written approval for the aggrega
29、te usedin the mix design.TABLE 2 Type IComposition of Mixture per 100 gal of RefinedCoal Tar EmulsionApplicationRefinedCoalTarEmulsion,L galWater,L galAggregate,mg lbFirst and Second SealCoat10010025-30 25-30 36-60 300-500TABLE 3 Type IIComposition of Mixture per 100 gal of RefinedCoal Tar EmulsionA
30、pplicationRefinedCoalTarEmulsion,L galWater,L galAdditive,L galAggregate,mg lbFirst and SecondSeal Coat10010025-70 25-70 2-6 2-6 36-72 300-600TABLE 4 Physical Requirements for Emusified Refined Coal TarMixture Tested According to Test Methods D2939PropertyAType ICharacteristicsType IICharacteristics
31、min max min maxUniformity Pass PassResidue byevaporation, %50 40Water Content, 50 60Aggregate Content, % 17 32 16 34Ash Content, percent 60 70 60 73Drying Time, firm set,h88Resistance to kero-senePass PassResistance to water Pass PassFlexibility No flaking, cracking through to the substrate, orloss
32、of adhesion to the substrateASee Test Methods D2939.D6945/D6945M 03 (2017)29. Inspection9.1 Inspection of material shall be made as agreed uponbetween the purchaser and the manufacturer.10. Packaging and Package Marking10.1 Emulsion shall be packaged to permit acceptance bycarrier for transportation
33、 and to afford adequate protectionfrom normal hazards of handling and shipping.10.2 Each package shall be plainly marked with the nameand brand of the manufacturer/ supplier, ASTM designation aswell as the type or grade of the product, production code, or lotnumber. If the shipment is by bulk tanker
34、 load, the beforementioned information shall be so noted on the bill of lading.11. Keywords11.1 bituminous pavement sealer; emulsified coal tar; min-eral colloidASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this sta
35、ndard. 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 committee and must be revi
36、ewed 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 meeting of theresponsib
37、le 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, PO Box C700, West Co
38、nshohocken, 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 03 (2017)3
