ASTM_C_29_-_C_29M_-_17a.pdf

Designation:C29/C29M17aAmerican Association of StateHighway and Transportation Officials StandardAASHTO No.:T19/T19MStandard Test Method forBulk Density(“Unit Weight”)and Voids in Aggregate1This standard is issued under the fixed designation C29/C29M;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of bulkdensity(“unit weight”)of aggregate in a compacted or loosecondition,and calculated voids between particles in fine,coarse,or mixed aggregates based on the same determination.This test method is applicable to aggregates not exceeding 125mm 5 in.in nominal maximum size.NOTE1Unit weight is the traditional terminology used to describe theproperty determined by this test method,which is weight per unit volume(more correctly,mass per unit volume or density).1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard,as appropriate for aspecification with which this test method is used.An exceptionis with regard to sieve sizes and nominal size of aggregate,inwhich the SI values are the standard as stated in SpecificationE11.Within the text,inch-pound units are shown in brackets.The values stated in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.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.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 Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C125 Terminology Relating to Concrete and Concrete Ag-gregatesC127 Test Method for Relative Density(Specific Gravity)and Absorption of Coarse AggregateC128 Test Method for Relative Density(Specific Gravity)and Absorption of Fine AggregateC670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsC702/C702M Practice for Reducing Samples of Aggregateto Testing SizeC1077 Practice for Agencies Testing Concrete and ConcreteAggregates for Use in Construction and Criteria forTesting Agency EvaluationD75/D75M Practice for Sampling AggregatesE11 Specification for Woven Wire Test Sieve Cloth and TestSieves2.2 AASHTO Standard:T19/T19M Method of Test for Unit Weight and Voids inAggregate33.Terminology3.1 DefinitionsThe terms used in this test method aredefined in Terminology C125.3.2 Definitions of Terms Specific to This Standard:3.2.1 voids,nin unit volume of aggregate,the spacebetween particles in an aggregate mass not occupied by solidmineral matter.1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregatesand is the direct responsibility of SubcommitteeC09.20 on Normal Weight Aggregates.Current edition approved April 1,2017.Published June 2017.Originallyapproved in 1920.Last previous edition approved in 2017 as C29/C29M 17.DOI:10.1520/C0029_C0029M-17a.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.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.*A Summary of Changes section appears at the end of this standardCopyright 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 3.2.1.1 DiscussionVoids within particles,either perme-able or impermeable,are not included in voids as determinedby this test method.4.Significance and Use4.1 This test method is often used to determine bulk densityvalues that are necessary for use for many methods of selectingproportions for concrete mixtures.4.2 The bulk density also may be used for determiningmass/volume relationships