1、Designation:D2172/D2172M11Standard Test Methods forQuantitative Extraction of Bitumen From Bituminous PavingMixtures1This standard is issued under the fixed designation D2172/D2172M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the
2、 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 These test methods cover the quantitative determinationof bitumen in hot-mixed paving mixtures and pavementsamples
3、.Aggregate extracted from a paving mixture may beused for sieve analysis using Test Method D5444.1.2 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 used indep
4、endently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.2.1 Measurements of volume and mass are only given inSI units because they are the only units typically used inpractice when performing this test method.1.3 This standard does not purport to a
5、ddress 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.Specific hazards aregiven in Section 7.NOTE1The results o
6、btained by these test methods may be affected bythe age of the material tested,with older samples tending to yield slightlylower bitumen content.Best quantitative results are obtained when the testis made on mixtures and pavements shortly after their preparation.It isdifficult to remove all the asph
7、alt when some aggregates are used andsome chlorides may remain within the mineral matter affecting themeasured asphalt content.2.Referenced Documents2.1 ASTM Standards:2C128 Test Method for Relative Density(Specific Gravity)and Absorption of Fine AggregateC670 Practice for Preparing Precision and Bi
8、as Statementsfor Test Methods for Construction MaterialsD70 Test Method for Density of Semi-Solid BituminousMaterials(Pycnometer Method)D604 Specification for Diatomaceous Silica Pigment(With-drawn 2003)3D979 Practice for Sampling Bituminous Paving MixturesD1461 Test Method for Moisture or Volatile
9、Distillates inBituminous Paving MixturesD1856 Test Method for Recovery of Asphalt From Solutionby Abson MethodD2111 Test Methods for Specific Gravity and Density ofHalogenated Organic Solvents and Their AdmixturesD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road
10、and Paving MaterialsD5444 Test Method for Mechanical Size Analysis of Ex-tracted AggregateD6368 Specification for Vapor-Degreasing Solvents Basedon normal-Propyl Bromide and Technical Grade normal-Propyl Bromide2.2 Federal Specifications:O-T-634(latest)normal Propyl Bromide,Technical43.Summary of Te
11、st Methods3.1 The paving mixture is extracted with trichloroethylene,normal Propyl Bromide,or methylene chloride using theextraction equipment applicable to the particular method.Thebitumen content is calculated by difference from the mass ofthe extracted aggregate,moisture content,and mineral matte
12、rin the extract.The bitumen content is expressed as masspercent of moisture-free mixtures.4.Significance and Use4.1 All of these test methods can be used for quantitativedeterminations of bitumen in hot-mixed paving mixtures andpavement samples for specification acceptance,serviceevaluation,control,
13、and research.Each method prescribes thesolvent or solvents and any other reagents that can be used in1These test methods are under the jurisdiction of ASTM Committee D04 onRoad and Paving Materials and are the direct responsibilities of SubcommitteeD04.25 on Analysis of Asphalt Mixtures.Current edit
14、ion approved Feb.1,2011.Published March 2011.Originallyapproved in 1963.Last previous edition approved in 2005 as D2172 05.DOI:10.1520/D2172-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volum
15、e information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from DLA Document Services,Building 4/D,700 Robbins Ave.,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil.Copyright ASTM In
16、ternational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the test method.Test Method D1856 requires that MethodAbeused when asphalt is recovered from solution.NOTE2The quality of the results produced by this standard aredependent on the competence of the personnel performing the procedureand the capability,calibration,and maintenance of the equipment used.Agencies that meet the criteria of Standard Practice D3666 are generallyconsidered capable of competent an
