1、Designation:D669021Standard Specification forJoint and Crack Sealants,Hot Applied,for Concrete andAsphalt Pavements1This standard is issued under the fixed designation D6690;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 last 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 joint and crack sealants of thehot-applied type intended for use in sealing joints and cracks in
3、portland cement concrete and asphaltic concrete pavements.1.2 This specification does not purport to cover the proper-ties required of sealants for use in areas of portland cementconcrete or asphaltic pavement subject to jet fuel or other fuelspillage such as vehicle and/or aircraft refuel and maint
4、enanceareas.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall
5、not be consideredas requirements of the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicab
6、ility of regulatory limitations prior to use.1.6 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 Recom-mendations issued by the W
7、orld Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D36/D36M Test Method for Softening Point of Bitumen(Ring-and-Ball Apparatus)D5167 Practice for Melting of Hot-Applied Joint and CrackSealant and Filler for EvaluationD5249 Specification for Bac
8、ker Material for Use with Cold-and Hot-Applied Joint Sealants in Portland Cement Con-crete and Asphalt JointsD5329 Test Methods for Sealants and Fillers,Hot-Applied,for Joints and Cracks in Asphalt Pavements and PortlandCement Concrete Pavements3.General Requirements3.1 The sealant shall be composed
9、 of a mixture of materialsthat will form a resilient and adhesive compound capable ofeffectively sealing joints and cracks in concrete and asphalticpavements against the infiltration of moisture and foreignmaterial throughout repeated cycles of expansion and contrac-tion with temperature changes,and
10、 that will not,at ambienttemperatures,flow from the joint or be picked up by vehicletires.The material shall be capable of being brought to auniform pouring consistency suitable for completely filling thejoints without inclusion of large air holes or discontinuities andwithout damage to the material
11、.It shall remain relativelyunchanged in application characteristics for at least 6 h at therecommended application temperature in the field.4.Classification4.1 Type IAjoint and crack sealant capable of maintainingan effective seal in moderate climates.The material is tested forlow-temperature perfor
12、mance at 18 C using 50%extension.4.2 Type IIA joint and crack sealant capable of maintain-ing an effective seal in most climates.Material is tested forlow-temperature performance at 29 C using 50%extension.4.3 Type IIIA joint and crack sealant capable of maintain-ing an effective seal in most climat
13、es.Material is tested forlow-temperature performance at 29 C using 50%extension.4.4 Type IVA joint and crack sealant capable of maintain-ing an effective seal in climates experiencing very coldtemperatures.Material is tested for low-temperature perfor-mance at 29 C using 200%extension.NOTE1It is the
14、 responsibility of the user agency to determine whichtype is most applicable to their conditions.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.33 onFormed In-Place Sealants for Joints and Cracks in
15、 Pavements.Current edition approved May 1,2021.Published May 2021.Originallyapproved in 2001.Last previous edition approved in 2015 as D6690 15.DOI:10.1520/D6690-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book o
16、f 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 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