ASTM_D_3203_-_D_3203M_-_11.pdf

Designation:D3203/D3203M11Standard Test Method forPercent Air Voids in Compacted Dense and OpenBituminous Paving Mixtures1This standard is issued under the fixed designation D3203/D3203M;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 determination of the percent airvoids in compacted dense and open bituminous paving mix-tures.1.2 UnitsThe values stated in SI units are to be regardedas standard.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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1188 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 MixturesD2726 Test Method for Bulk Specific Gravity and Densityof Non-Absorptive Compacted Bituminous MixturesD3549 Test Method for Thickness or Height of CompactedBituminous Paving Mixture SpecimensD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsD4460 Practice for Calculating Precision Limits WhereValues are Calculated from Other Test MethodsD6752 Test Method for Bulk Specific Gravity and Densityof Compacted Bituminous Mixtures Using AutomaticVacuum Sealing MethodD6857 Test Method for Maximum Specific Gravity andDensity of Bituminous Paving Mixtures Using AutomaticVacuum Sealing Method3.Terminology3.1 Definitions:3.1.1 air voidsthe pockets of air between the bitumen-coated aggregate particles in a compacted bituminous pavingmixture.3.1.2 dense bituminous paving mixturesbituminous pav-ing mixtures in which the air voids are less than 10%whencompacted.3.1.3 open bituminous paving mixturesbituminous pavingmixtures in which the air voids are 10%or more whencompacted.3.1.3.1 DiscussionFor borderline cases,a bituminous pav-ing mixture shall be designated an open bituminous pavingmixture if the calculated percent air voids,based on either 6.1or 6.2,is 10%or more.4.Significance and Use4.1 The percent of air voids in a bituminous mixture is usedas one of the criteria in the design methods and for evaluationof the compaction imparted in bituminous paving projects.NOTE1The text of this test method references notes and footnoteswhich provide explanatory material.These notes and footnotes(excludingthose in tables and figures)shall not be considered as requirements of thetest method.NOTE2The quality of the results produced by this standard aredependent on the competence of the personnel performing the procedureand the capability,calibration,and maintenance of the equipment used.Agencies that meet the criteria of Standard Practice D3666 are generallyconsidered capable of competent and objective testing/sampling/inspection/etc.Users of this standard are cautioned that compliance withPractice D3666 alone does not completely assure reliable results.Reliableresults depend on many factors;following the suggestions of PracticeD3666 or some similar acceptable guideline provides a means ofevaluating and controlling some of those factors.5.Sampling5.1 Samples for testing shall consist of specimens fromlaboratory molded mixtures or cores from field compactedmixtures.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 Bituminous Mixtures.Current edition approved Dec.1,2011.Published December 2011.Originallyapproved in 1973.Last previous edition approved in 2005 as D3203 05.DOI:10.1520/D3203_D3203M-11.2For 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.Procedure6.1 For dense bituminous paving mixtures,determine thebulk specific gravity of the compacted mixture by Test MethodD1188,by Test Method D2726,or by Test Method D6752.6.2 For open bituminous mixtures,determine the density ofa regularly shaped specimen of compacted mixture from its drymass(in grams)and its volume(in cubic centimetres).6.2.1 Obtain the height of the specimens by Test MethodD3549.6.2.2 Measure the diameter of the specimen at four locationsand determine the average.6.2.3 Calculate the volume of the specimen based on theaverage height and diameter measur