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ASTM_D_7564_-_D_7564M_-_09_2015.pdf

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1、Designation:D7564/D7564M09(Reapproved 2015)Standard Practice forConstruction of Asphalt-Rubber Cape Seal1This standard is issued under the fixed designation D7564/D7564M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of las

2、t 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 practice covers asphalt-rubber cape seal,which isdefined as the application of an asphalt-rubber seal coat placedonto an

3、existing pavement surface,followed by the applicationof a conventional Type II or III slurry seal.NOTE1An asphalt-rubber seal coat is also known as a stressabsorbing membrane(SAM)which consists of an asphalt-rubber mem-brane seal followed by the application of precoated aggregate chips.1.2 An asphal

4、t-rubber cape seal is commonly used to extendthe service life of low to medium trafficked and moderatelydistressed asphalt-surfaced pavements.The existing pavementcondition can be used to determine the application rates for theasphalt-rubber binder and aggregate as well as the aggregategradation.Pav

5、ements in relatively poor condition will requirea coarser aggregate with a higher binder application rate.1.3 The values stated in 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 u

6、sed independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 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 saf

7、ety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C29/C29M Test Method for Bulk Density(“Unit Weight”)and Voids in AggregateC117 Test Method for Materials Finer than 75-m(No.200)Sieve in Mineral Aggregates by Wa

8、shingC127 Test Method for Relative Density(Specific Gravity)and Absorption of Coarse AggregateC128 Test Method for Relative Density(Specific Gravity)and Absorption of Fine AggregateC131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles

9、MachineC136 Test Method for Sieve Analysis of Fine and CoarseAggregatesD946 Specification for Penetration-Graded Asphalt Cementfor Use in Pavement ConstructionD1139 Specification for Aggregate for Single or MultipleBituminous Surface TreatmentsD2196 Test Methods for Rheological Properties of Non-New

10、tonian Materials by Rotational ViscometerD2419 Test Method for Sand Equivalent Value of Soils andFine AggregateD3381 Specification for Viscosity-Graded Asphalt Cementfor Use in Pavement ConstructionD3910 Practices for Design,Testing,and Construction ofSlurry SealD4791 Test Method for Flat Particles,

11、Elongated Particles,or Flat and Elongated Particles in Coarse AggregateD5360 Practice for Design and Construction of BituminousSurface TreatmentsD5821 Test Method for Determining the Percentage ofFractured Particles in Coarse AggregateD6114 Specification for Asphalt-Rubber BinderD6373 Specification

12、for Performance Graded AsphaltBinderD6433 Practice for Roads and Parking Lots Pavement Con-dition Index Surveys3.Significance and Use3.1 The procedure described in this practice is used todesign and construct an asphalt-rubber cape seal that willprovide a wearing course when subjected to low to medi

13、umtraffic volumes and where the pavement distress is due toblock-type cracking resulting from pavement aging or reflec-tive cracking only(not where there are clear indications offatigue cracking due to repeated heavy axle loads).NOTE2Block cracking is defined in Practice D6433.See AppendixX1 for an

14、example of block cracking due to aging.1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.24 onAsphalt Surface Treatments.Current edition approved Jan.1,2015.Published February 2015.Originallyapproved in 200

15、9.Last previous edition approved in 2009 as D7564/D7564M 09.DOI:10.1520/D7564_D7564M-09R15.2For 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

16、 page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Materials4.1 Asphalt-Rubber Seal Coat(or Stress AbsorbingMembraneSAM):4.1.1 Asphalt CementThe asphalt cement for the asphalt-rubber seal coat should comply with the requirements ofSpecifications D946,D3381,or D6373.Asphalt cement gradeselection is based on considerations of local climatic and trafficconditions.The asphalt-rubber supplier should perform routineQ

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