1、Designation:D146117(Reapproved 2022)Standard Test Method forMoisture or Volatile Distillates in Asphalt Mixtures1This standard is issued under the fixed designation D1461;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of la
2、st revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the determinatio
3、n,by directmeasurement,of moisture or volatile fractions of the asphalt inasphalt mixtures.1.2 The values stated in SI units are to be regarded as thestandard.No other units of measurement are included in thisstandard.1.3 The text of this standard references notes and footnoteswhich provide explanat
4、ory material.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.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
5、 appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for th
6、eDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D979/D979M Practice for Sampling Bituminous PavingMixturesD3666 Specification for Minimum Requirements for Age
7、n-cies Testing and Inspecting Road and Paving MaterialsD6997 Test Method for Distillation of Emulsified Asphalt3.Significance and Use3.1 This test method is used for determining either theamount of moisture or the amount of volatile petroleumdistillates in asphalt mixtures.3.2 Applicable standards a
8、re those in which measurementsor calibrations are made,samples are procured,or products areselected.34.Apparatus4.1 Metal StillA vertical cylindrical still,similar to thatused in Test Method D6997,having a faced flange at the top towhich the head is tightly attached by means of a clamp.Thehead shall
9、 be of metal,preferably of copper or brass,and shallhave a tube opening of 25.4 mm of inside diameter to facilitateattachment of the specified trap/condenser assembly.4.2 Condenser,of the water-cooled reflux glass-tube type,having a condenser jacket not less than 400 mm long with aninner tube 9.5 to
10、 12.7 mm in outside diameter.The end of thecondenser inserted in the trap shall be ground off at an angle of30 from the vertical axis of the condenser.For mixtures withvery volatile solvents,it may be necessary to supplement thiswater-cooled condenser with a second water-cooled condenserof approxima
11、tely the same dimensions.4.3 Trap,of well-annealed glass,of one of the followingtypes depending upon the purpose of the test:4.3.1 For determination of water in asphalt mixtures,a glasstrap of 10 or 25 mL capacity shall be used.The trap shall begraduated in 0.1 mL divisions with 60.05 mL maximum err
12、orbelow 1 mL,and in 0.2 mL divisions with a 60.1 mLmaximum error above 1 mL,as specified in Table 1 and Figs.1-4.Tapered ball traps require adaptors for connection to themetal still.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct respon
13、sibility of Subcommittee D04.25 onAnalysis of Asphalt Mixtures.Current edition approved Nov.1,2022.Published November 2022.Originallyapproved in 1956.Last previous edition approved in 2017 as D1461 17.DOI:10.1520/D1461-17R22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontac
14、t ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The quality of the results produced by this standard are dependent on thecompetence of the personnel performing the procedure and the capaci
15、ty,calibration,and maintenance of the equipment used.Agencies that meet the criteria ofSpecification D3666 are generally considered capable of competent and objectivetesting,sampling,inspection,etc.Users of this standard are cautioned thatcompliance with Specification D3666 alone does not completely
16、 ensure reliableresults.Reliable results depend on many factors;following the suggestions ofSpecification D3666 or some similar acceptable guideline provides a means ofevaluating and controlling some of those factors.Copyright ASTM International,100 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 theDevelopm