ASTM_D_8360_-_22.pdf

Designation:D836022Standard Test Method forDetermination of Rutting Tolerance Index of Asphalt MixtureUsing the Ideal Rutting Test1This standard is issued under the fixed designation D8360;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of 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 test method covers the procedures for preparing,testing,and measuring asphalt mixture rutting resistance athigh temperatures using cylindrical laboratory-prepared as-phalt mix samples or pavement cores.The test method de-scribes the determination of the rutting tolerance index,RTIndex,and other parameters determined from the load-displacement curve.These parameters can be used to evaluatethe resistance of asphalt mixtures to rutting.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 The text of this standard references notes and footnoteswhich provide explanatory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.4 The within-laboratory repeatability standard deviationof rutting tolerance index has been determined to be 2.42,based on two labs,30 test replicates,and ten different samples.The between-laboratory reproducibility of this test method isbeing determined and will be available on or before December31,2026.Therefore,this standard should not be used foracceptance or rejection of a material for purchasing purpose.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 applicability 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 World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D8 Terminology Relating to Materials for Roads and Pave-mentsD979/D979M Practice for Sampling Bituminous PavingMixturesD3203/D3203M Test Method for Percent Air Voids in Com-pacted Asphalt MixturesD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD6925 Test Method for Preparation and Determination ofthe Relative Density of Asphalt Mix Specimens by Meansof the Superpave Gyratory CompactorD6926 Practice for Preparation of Asphalt Mixture Speci-mens Using Marshall ApparatusD6927 Test Method for Marshall Stability and Flow ofAsphalt Mixtures2.2 AASHTO Standards:3R 30 Practice for Mixture Conditioning of Hot Mix Asphalt(HMA)T 324 Standard Method of Test for Hamburg Wheel-TrackTesting of Compacted Asphalt MixturesT 340 Standard Method of Test for Determining RuttingSusceptibility of Hot Mix Asphalt(HMA)Using theAsphalt Pavement Analyzer(APA)T 378 Standard Method of Test for Determining the Dy-namic Modulus and Flow Number for Asphalt MixturesUsing the Asphalt Mixture Performance Tester(AMPT)TP 116 Standard Method of Test for Rutting Resistance ofAsphalt Mixtures Using Incremental Repeated Load Per-manent Deformation(iRLPD)3.Terminology3.1 DefinitionsFor definitions of terms used in thisstandard,refer to Terminology D8.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.26 onFundamental/Mechanistic Tests.Current edition approved Oct.1,2022.Published October 2022.DOI:10.1520/D8360-22.2For 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 page onthe ASTM website.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.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 Trade(TBT)Committee.13.2 Definitions of Terms Specific to This Standard:3.2.1 RTIndex,nrutting tolerance index,the value used toevaluate mixture resistance to rutting.3.2.2 Pmax,npeak load(kN).See 10.3.3.2.3 f,nshear strength(MPa).4.Summary of Test Method4.1 The ideal rutting testing is conducted t