ASTM_D_2041_-_D_2041M_-_19.pdf

Designation:D2041/D2041M19Standard Test Method forTheoretical Maximum Specific Gravity and Density ofAsphalt Mixtures1This standard is issued under the fixed designation D2041/D2041M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the 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 This test method covers the determination of the theo-retical maximum specific gravity and density of uncompactedasphalt mixtures at 25 C 77 F.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 independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.1.2.1 Residual pressure measurements are shown in both theSI unit of kPa and the commonly used nonstandard equivalentunit of“mm of Hg.”1.2.2 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 The text of this standard references notes and footnoteswhich provide explanatory 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 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 theDevelopment of International 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 MaterialsD8 Terminology Relating to Materials for Roads and Pave-mentsD979/D979M Practice for Sampling Bituminous PavingMixturesD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD8055 Guide for Selecting an Appropriate Electronic Ther-mometer for Replacing Mercury Thermometers in D04Road and Paving Standards3.Terminology3.1 Refer to Terminology D8 for definitions relating tomaterials for roads and pavements.3.2 Definitions of Terms Specific to This Standard:3.2.1 density,as determined by this test methodthe massof a cubic meter of the material at 25 C 77 F in SI units.3.2.2 residual pressure,as employed by this test methodthe pressure in a vacuum vessel when vacuum is applied.3.2.3 specific gravity,as determined by this test methodthe ratio of a given mass of material at 25 C 77 F to themass of an equal volume of water at the same temperature.3.2.4 standardize,as employed by this test methoddetermine the value realized by a measurement instrument indirect comparison with the value realized by a standard underthe same testing conditions.1This test method is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.21 onSpecific Gravity and Density of Asphalt Mixtures.Current edition approved June 1,2019.Published June 2019.Originallyapproved in 1964.Last previous edition approved in 2011 as D2041/D2041M 11.DOI:10.1520/D2041_D2041M-19.2For 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 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 4.Summary of Test Method4.1 A weighed sample of oven-dry asphalt mixture in theloose condition is placed in a tared vacuum vessel.Sufficientwater at a temperature of 25 C 77 F is added to completelysubmerge the sample.Vacuum is gradually applied to reducethe residual pressure in the vacuum vessel to 4 kPa 30 mm ofHg or less and then held for 15 6 2 min.At the end of thevacuum period,the vacuum is gradually released.The volumeof the sample of asphalt mixture is obtained by immersing thevacuum container with the sample in a water b