ASTM_D_6704_-_08_2015.pdf

Designation:D670408(Reapproved 2015)Standard Test Method forDetermining the Workability of Asphalt Cold Mix PatchingMaterial1This standard is issued under the fixed designation D6704;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 test method provides a procedure for determinationof the workability of asphalt cold mix patching materials.1.2 This test method is applicable to asphalt cold mixpatching materials that will be stockpiled or packaged incontainers,subjected to different climatic conditions,and laterused for roadway patching operations.1.3 The within-laboratory repeatability standard deviationhas been determined to be 10%based on one lab,three testreplicates,and two different samples.The between-laboratoryreproducibility of this test method is being determined and willbe available on or before August 2013.Therefore,this testmethod should not be used for purchasing purposes.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This procedure may involve hazardous materials,operations,and equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C702 Practice for Reducing Samples ofAggregate to TestingSizeD8 Terminology Relating to Materials for Roads and Pave-mentsD75 Practice for Sampling AggregatesD3665 Practice for Random Sampling of Construction Ma-terialsD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD5581 Test Method for Resistance to Plastic Flow of Bitu-minous Mixtures Using Marshall Apparatus(6 inch-Diameter Specimen)3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 workabilitythe average maximum resistance to pen-etration by a designated penetrometer into a compacted asphaltcold mix that is confined in a designated box.3.2 Definitions for other terms used in this test method maybe found in Terminology D8 or a standard unabridged diction-ary.4.Summary of Test Method4.1 This test method is used to determine the relative valuefor workability of an asphalt cold mix patching material to beused under different climatic conditions.4.2 Cold patching samples are obtained from the asphaltcold mix stockpile or removed from its container,cooled to aspecified temperature,and measured for workability.5.Significance and Use5.1 This test method may be used to generate informationconcerning the potential characteristics of handling,placing,compaction,and performance of an asphalt cold mix.5.2 Workability is one of the main factors that influences thesuitability and ultimately the performance of asphalt cold mixsuitability for use as a roadway patching material.5.3 This test method is applicable to asphalt cold mixesmanufactured with modified or unmodified asphalt emulsions,cutback asphalts,or combinations thereof.6.Interferences6.1 Differences in the aggregate gradation,size,shape,andsurface properties,and the residual asphalt binder can signifi-cantly affect the workability test method values.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 Asphalts.Current edition approved June 1,2015.Published July 2015.Originally approvedin 2001.Last previous edition approved in 2008 as D6704 08.DOI:10.1520/D6704-08R15.2For 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 States1 6.2 Procedure variances can affect the values obtained.Careful adherence to this test method will decrease thelikelihood of differences caused by departures from procedureparameters.7.Apparatus7.1 Freezer,capable of maintaining a temperature of 10 61C.7.2 Balance,conforming to the requirements of Specifica-tion D4753,Class GP5.7.3 Boxes,three square workability boxes or other similarmolds,constructed to measure 165 by 165 by 50-mm deepinside dimensions and sufficiently rigid for forming and mea-suring the asphalt cold mix specimens(Fig.1).7.4 Compaction Hammer,specified in Test Method D5581with a flat tamping foot(Fig.2)of 150 by 150 by 6-mm thickattached to the bottom of the hammer and a 4536-g slidingweight with a free fall of 457.2 mm.7.5 Compression Testi