ASTM_D_4469_-_17.pdf

Designation:D446917Standard Practice forCalculating Percent Asphalt Absorption by the Aggregate inAsphalt Mixtures1This standard is issued under the fixed designation D4469;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 practice covers equations for calculating percentasphalt absorption by the aggregate in an asphalt mixture,expressed as percent of the oven-dry mass of the aggregate inthe asphalt mixture.This calculation is based on measuredvalues for components and properties of an oven-dry asphaltmixture.1.2 This practice 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 and health practices and determine the applica-bility of regulatory limitations prior to use.1.3 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:2C127 Test Method for Relative Density(Specific Gravity)and Absorption of Coarse AggregateC128 Test Method for Relative Density(Specific Gravity)and Absorption of Fine AggregateC136 Test Method for Sieve Analysis of Fine and CoarseAggregatesD8 Terminology Relating to Materials for Roads and Pave-mentsD1561 Practice for Preparation of Bituminous Mixture TestSpecimens by Means of California Kneading CompactorD2041 Test Method for Theoretical Maximum SpecificGravity and Density of Bituminous Paving MixturesD2172 Test Methods for Quantitative Extraction of BitumenFrom Bituminous Paving MixturesD3289 Test Method for Density of Semi-Solid and SolidAsphalt Materials(Nickel Crucible Method)D4125 Test Methods for Asphalt Content of BituminousMixtures by the Nuclear MethodD5444 Test Method for Mechanical Size Analysis of Ex-tracted AggregateD6307 Test Method for Asphalt Content of Asphalt Mixtureby Ignition MethodD6857 Test Method for Maximum Specific Gravity andDensity of Bituminous Paving Mixtures Using AutomaticVacuum Sealing Method3.Terminology3.1 For definitions of terms used in this standard,refer toTerminology D8.4.Summary of Test Method4.1 The percent asphalt absorption for an oven-dry asphaltmixture(expressed as percent of the oven-dry mass of the totalaggregate in the mixture)can be calculated by means ofequations in which measured values for the theoretical maxi-mum specific gravity of an oven-dry asphalt mixture,itsasphalt content(expressed either as percent of the total mass ofa sample of oven-dry asphalt mixture,or as percent of the massof oven-dry aggregate in a sample of oven-dry asphaltmixture),the apparent specific gravity of the asphalt,and theweighted average bulk specific gravity of the oven-dry totalaggregate in the asphalt mixture(Note 1).NOTE1Whenever it is referred to in this practice,the phrase,“weighted average bulk specific gravity of the aggregate,”refers to theweighted average of the oven-dry bulk specific gravities of the coarse andfine aggregates as determined by Test Methods C127 and C128.The fineaggregate ordinarily includes the mineral dust portion of the fine aggregatethat passes the No.200 sieve.The weighted average oven-dry bulkspecific gravity of the total aggregate is to be calculated by means of theequation given in the calculation section of Test Method C127.5.Significance and Use5.1 The amount of asphalt absorbed by the aggregatecontributes little or nothing to the durability of an asphalt1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.51 onAggregate Tests.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1985.Last previous edition approved in 2011 as D4469 11.DOI:10.1520/D4469-17.2For 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.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.1 pavement in service other than possibly providing greaterresistance to stripping in the presence of water.5.2 Percent asphalt absorption