1、Designation:D722908(Reapproved 2013)1Standard Test Method forPreparation and Determination of Bulk Specific Gravity ofDense-Graded Cold Mix Asphalt(CMA)Specimens byMeans of Superpave Gyratory Compactor1This standard is issued under the fixed designation D7229;the number immediately following the des
2、ignation 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.1NOTEEditorially corrected 9.1 in December 2013
3、.1.Scope1.1 This test method concerns the preparation and compac-tion of cylindrical specimens of dense-graded cold mix asphalt(CMA)using the Superpave gyratory compactor(SGC).1.2 This test method is applicable for road mixes or plantmixes prepared at ambient temperatures.1.3 This test method also r
4、efers to the determination of thebulk specific gravity of the compacted CMA.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 A precision and bias statement for this test method hasnot been developed at this time.Therefore,
5、this test methodshould not be used for acceptance or rejection of a material forpurchasing purposes.1.6 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
6、practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C566 Test Method for Total Evaporable Moisture Content ofAggregate by DryingD8 Terminology Relating to Materials for Roads and Pave-mentsD977 Specification for Emulsified Aspha
7、ltD1188 Test Method for Bulk Specific Gravity and Density ofCompacted Bituminous Mixtures Using Coated SamplesD2041 Test Method for Theoretical Maximum SpecificGravity and Density of Bituminous Paving MixturesD2397 Specification for Cationic Emulsified AsphaltD2489 Practice for Estimating Degree of
8、Particle Coating ofBituminous-Aggregate MixturesD2726 Test Method for Bulk Specific Gravity and Densityof Non-Absorptive Compacted Bituminous MixturesD3203 Test Method for Percent Air Voids in CompactedDense and Open Bituminous Paving MixturesD3628 Practice for Selection and Use of EmulsifiedAsphalt
9、sD4215 Specification for Cold-Mixed,Cold-Laid BituminousPaving MixturesD6752 Test Method for Bulk Specific Gravity and Densityof Compacted Bituminous Mixtures Using AutomaticVacuum Sealing MethodD6925 Test Method for Preparation and Determination ofthe Relative Density of Hot Mix Asphalt(HMA)Speci-m
10、ens by Means of the Superpave Gyratory CompactorD6934 Test Method for Residue by Evaporation of Emulsi-fied AsphaltD6998 Practice for Evaluating Aggregate Coating usingEmulsified Asphalts3.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology D8.3.2 Definitions of Terms Specific
11、to This Standard:3.2.1 dense-graded aggregate emulsified asphalt coldmixturesmixtures of dense-graded aggregate and emulsifiedasphalt uniformly mixed at or near ambient temperature.3.2.2 dense-graded cold mix asphalt(CMA)emulsifiedasphalt that has been mixed with aggregate,dry,and com-pacted by a su
12、itable compacting device.3.2.3 nominal maximum aggregate/sieve sizeone sievesize larger than the first sieve to retain more than 10%.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.27 onCold Mix Asphal
13、ts.Current edition approved Dec.1,2013.Published February 2014.Originallyapproved in 2006.Last previous edition approved in 2008 as D7229 08.DOI:10.1520/D7229-08R13E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Boo
14、k 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 States1 4.Significance and Use4.1 This test method is used to prepare specimens fordetermination
15、 of the bulk specific gravity of a cured compactedspecimen.It covers modifications to Test Method D6925 forpreparation of CMA by means of the SGC.4.2 This test method is useful for monitoring the density ofthe specimen during the compaction process.It is suitable forlaboratory design and field contr
16、ol of CMA.4.3 Local end-use specifications should be developed toestablish conformance to the job and user requirements.5.Apparatus5.1 Superpave Gyratory CompactorAn electrohydyaulicor electromechanical compactor with a ram and ram heads asdescribed in Test Method D6925.6.Materials6.1 Aggregates3Dense-graded aggregates meeting the re-quirements of Specification D4215 are among those suitablefor emulsified asphalt cold mixtures or further guidance shouldbe obtained from the Cold Mix Manual.6.2 Em