1、Designation:D4792/D4792M13(Reapproved 2019)Standard Test Method forPotential Expansion of Aggregates from HydrationReactions1This standard is issued under the fixed designation D4792/D4792M;the number immediately following the designation indicates theyear of original adoption or,in the case of revi
2、sion,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 potentialvolume expansion of dense graded compacted aggregate
3、s thatcontain components susceptible to hydration and consequentvolume increase,such as the free calcium and magnesiumoxides that occur in some industrial by-products.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system
4、 may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.NOTE1Sieve size is identified by its standard designation in Speci-fication E11.The alternative designation given in parenth
5、eses is forinformation only and does not represent a different standard sieve size.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
6、 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 Thi
7、s 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(T
8、BT)Committee.2.Referenced Documents2.1 ASTM Standards:2C702/C702M Practice for Reducing Samples of Aggregateto Testing SizeD75/D75M Practice for Sampling AggregatesD698 Test Methods for Laboratory Compaction Character-istics of Soil Using Standard Effort(12,400 ft-lbf/ft3(600kN-m/m3)D1883 Test Metho
9、d for California Bearing Ratio(CBR)ofLaboratory-Compacted SoilsD2940/D2940M Specification for Graded Aggregate Mate-rial For Bases or Subbases for Highways or AirportsD3666 Specification for Minimum Requirements for Agen-cies Testing and Inspecting Road and Paving MaterialsE11 Specification for Wove
10、n Wire Test Sieve Cloth and TestSieves3.Summary of Test Method3.1 This test method consists of measuring the volumeexpansion of compacted specimens following the generalprocedures of Test Method D1883.Compaction is based onmaximum density determination using Test Methods D698.Toaccelerate the hydrat
11、ion reaction,specimens are stored in waterat 70 6 3 C 158 6 5 F for a minimum of seven days.4.Significance and Use4.1 This test method provides a procedure for determiningthe compliance of steel slags and other materials withspecifications,such as Specification D2940/D2940M,that limitpermissible exp
12、ansion of base and subbase aggregates contain-ing components subject to hydration.4.2 This test method can also be used to evaluate theeffectiveness of aging or other treatments for reducing theexpansive potential of such materials.1This test method is under the jurisdiction of ASTM Committee D04 on
13、 Roadand Paving Materials and is the direct responsibility of Subcommittee D04.51 onAggregate Tests.Current edition approved Feb.15,2019.Published February 2019.Originallyapproved in 1988.Last previous edition approved in 2013 as D4792/D4792M 13.DOI:10.1520/D4792_D4792M-13R19.2For referenced ASTM st
14、andards,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
15、-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
16、 Barriers to Trade(TBT)Committee.1 4.3 Test results have not been correlated with fieldperformance,and values obtained do not necessarily indicateexpansion that may occur in service conditions.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 Specification D3666 are generallyconsidered capable of competent and obje
