ASTM_D_8038_-_16.pdf

Designation:D803816Standard Practice forReclamation of Recycled Aggregate Base(RAB)Material1This standard is issued under the fixed designation D8038;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 selected aspects for reclamation ofrecycled aggregate base(RAB)material derived from asphaltpavement or concrete.RAB may be called recycled asphaltpavement(RAP)or recycled concrete aggregate(RCA).1.2 This practice is provided related to material quality,material quality control testing,and also operator and facilityqualifications.1.3 UnitsThe values stated in SI units are to be regardedas the standard.No other units of measurement are included inthis standard.NOTE1Sieve size is identified by its standard designation in Speci-fication E11.The alternative designation given in parentheses is forinformation only and does not represent a different standard sieve size.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 and health practices and determine the applicabil-ity of regulatory limitations prior to use.1.5 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunction withprofessional judgment.Not all aspects of this practice may beapplicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“Standard”in thetitle means only that the document has been approved throughthe ASTM consensus process.2.Referenced Documents2.1 ASTM Standards:C117 Test Method for Materials Finer than 75-m(No.200)Sieve in Mineral Aggregates by WashingC131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles MachineC136 Test Method for Sieve Analysis of Fine and CoarseAggregatesC535 Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the LosAngeles MachineC702 Practice for Reducing Samples ofAggregate to TestingSizeD8 Terminology Relating to Materials for Roads and Pave-mentsD653 Terminology Relating to Soil,Rock,and ContainedFluidsD75 Practice for Sampling AggregatesD2940 Specification for Graded Aggregate Material ForBases or Subbases for Highways or AirportsD6307 Test Method for Asphalt Content of Asphalt Mixtureby Ignition MethodD6928 Test Method for Resistance of Coarse Aggregate toDegradation by Abrasion in the Micro-Deval ApparatusE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 Definitions:3.1.1 For definitions of common technical terms in thisstandard,refer to Terminology D653 and D8.3.2 Definitions of Terms Specific to This Standard:3.2.1 asphalt/concrete recycling facility(facility),nthephysical plant(or plants)where disposed asphalt and concreteare received,processed,tested,and stockpiled.This mayinclude separate transfer locations.3.2.2 asphalt/concrete recycling operator(operator),nthecompany or companies that receive disposed asphalt andconcrete material and transform these materials into a finishedrecycled aggregate product.3.2.3 recycled aggregate base(RAB),naggregate derivedfrom processed/crushed asphalt or concrete pavement or struc-tural concrete.4.Significance and Use4.1 Use of recycled aggregate base has become common-place in transportation applications.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.14 on Geotechnics ofSustainable Construction.Current edition approved Nov.15,2016.Published December 2016.DOI:10.1520/D8038-16Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 RAB may be used alone or in mixtures with otheraggregate materials(virgin and/or recycled)in the productionof unbound base course materials.4.3 Quality of RAB is critical for successful reuse inpavement base applications.This practice is intended toprovide a common baseline framework for assuring material,operator,and facility quality for production of RAB.5.Material Quality Specifications5.1 GeneralThe material quality specifications are de-signed to ensure that the operator and the facility produce aRAB product that meets appropriate,generic quality specifi-cations.Therefore,the limits contained within this ASTMstandard may be considered as minimum quality standards.Individual RAB users and local agencies may make theirindividual RAB