ASTM_D_3625_-_D_3625M_-_20.pdf

Designation:D3625/D3625M20Standard Practice forEffect of Water on Asphalt-Coated Aggregate Using BoilingWater1This standard is issued under the fixed designation D3625/D3625M;the number immediately following the designation indicates theyear of original adoption or,in the case 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 practice covers a rapid procedure for visuallyobserving the loss of adhesion in uncompacted asphalt-coatedaggregate mixtures due to the action of boiling water.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in noncon-formance with the standard.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 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.1.5 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 PavingMixturesE1 Specification for ASTM Liquid-in-Glass Thermometers3.Terminology3.1 DefinitionsFor definitions of terms used in thisstandard,refer to Terminology D8.4.Summary of Practice4.1 An asphalt-coated aggregate mixture sample is placed ina container of boiling distilled water and boiled for 10 min.After cooling the boiled mixture,visual observation is made ofretained asphalt coating on the aggregate.5.Significance and Use5.1 This practice is useful as an indicator of the relativesusceptibility of asphalt-coated aggregate to water,but shouldnot be used as a measure of field performance because suchcorrelation has not been established.If loss of adhesion due towater is indicated,testing by other procedures should beconducted to further evaluate the mixture.5.2 This practice should not be used for acceptance/rejection by owner agencies.6.Apparatus6.1 Scoop,shovel,or other implement capable of removinga representative sample from a larger mass of asphalt aggregatemixture.6.2 Glass Beakers,heat-resistant,1000 mL to 2000 mLcapacity or suitable metal containers of similar dimensions andcapacity.6.3 Source of Distilled Water,at least 500 mL 12qt foreach test(Note 1).NOTE1Water that is not distilled has been shown to significantlyaffect results of the procedure and should not be used.6.4 Device for Heating WaterGas burner with wire gauzesupported on tripod or ring,hot plate,camp stove,or othersuitable device which will distribute heat evenly.6.5 ThermometersASTM low-distillation thermometersgraduated either in Celsius or Fahrenheit as specified,having arange from 2 C to+300 C or 30 F to 580 F respectively,and conforming to the requirements for thermometer 7C or 7F1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.22 on Effectof Water and Other Elements on Asphalt Coated Aggregates.Current edition approved July 1,2020.Published July 2020.Originally approvedin 1977.Last previous edition approved in 2012 as D3625/D3625M 12.DOI:10.1520/D3625_D3625M-20.2For 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.as prescribed in Specification E1.Thermometric devices suchas RTDs,thermistors,or thermocouples with equal or betteraccuracy within the temperature range of thermometer 7C or7F may be used.7.Sample Preparation7.1 Prepare an uncompacted asphalt-coated aggregate mix-ture following established laboratory procedures or obtain asample