1、Designation:D639011(Reapproved 2017)Standard Test Method forDetermination of Draindown Characteristics inUncompacted Asphalt Mixtures1This standard is issued under the fixed designation D6390;the number immediately following the designation indicates the year oforiginal adoption or,in the case of re
2、vision,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 covers the determination of the amountof draindown in an uncompacted asphalt mixture sa
3、mple whenthe sample is held at elevated temperatures comparable to thoseencountered during the production,storage,transport,andplacement of the mixture.The test is particularly applicable tomixtures such as porous asphalt(open-graded friction course)and stone matrix asphalt(SMA).1.2 The values state
4、d in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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,a
5、nd environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 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
6、 Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsD979 Practice for Sampling Bituminous P
7、aving MixturesD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD6926 Practice for Preparation of Asphalt Mixture Speci-mens Using Marshall ApparatusE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3
8、.Terminology3.1 Definitions:3.1.1 draindownfor the purpose of this test method,drain-down is considered to be that portion of material whichseparates itself from the sample as a whole and is depositedoutside the wire basket during the test.The material whichdrains may be composed of either asphalt b
9、inder or a combi-nation of asphalt binder,additives,or fine aggregate.4.Summary of Test Method4.1 A sample of the asphalt mixture to be tested is preparedin the laboratory or obtained from field production.The sampleis placed in a wire basket which is positioned on a plate orother suitable container
10、 of known mass.The sample,basket,and plate or container are placed in a forced draft oven for 1 hat a pre-selected temperature.At the end of 1 h,the basketcontaining the sample is removed from the oven along with theplate or container and the mass of the plate or containercontaining the drained mate
11、rial,if any,is determined.Theamount of draindown is then calculated.5.Significance and Use5.1 This test method can be used to determine whether theamount of draindown measured for a given asphalt mixture iswithin specified acceptable levels.The test provides an evalu-ation of the draindown potential
12、 of an asphalt mixture duringmixture design and/or during field production.This test isprimarily used for mixtures with high coarse aggregate contentsuch as porous asphalt(open-graded friction course)and stonematrix asphalt(SMA).6.Apparatus6.1 Forced Draft Oven,capable of maintaining the tempera-tur
13、e in a range from 120 to 175 C and the set temperature towithin 62 C.6.2 Plates,or other suitable containers of appropriate size.The plates or containers used shall be of appropriate durabilityto withstand the oven temperatures.Cake pans or pie tins areexamples of suitable types of containers.1This
14、test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.25 onAnalysis of Asphalt Mixtures.Current edition approved Oct.1,2017.Published October 2017.Originallyapproved in 1999.Last previous edition approved in 2011
15、as D6390 11.DOI:10.1520/D6390-11R17.2For 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,1
16、00 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.1 6.3 Standard Basket,meeting the dimensions shown in Fig.1.The basket shall be constructed using standard 6
