1、Designation:C87/C87M17Standard Test Method forEffect of Organic Impurities in Fine Aggregate on Strengthof Mortar1This standard is issued under the fixed designation C87/C87M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year o
2、f last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of the effecton mortar strength of the organic impurities in fine aggregate,wh
3、ose presence is indicated using Test Method C40/C40M.Comparison is made between compressive strengths of mortarmade with washed and unwashed fine aggregate.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
4、 exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.Some values have only SI units because theinch-pound equivalents are not used in the practice.NOTE1Sieve size is identified by its stan
5、dard designation in Speci-fication E11.The alternative designation given in parentheses is forinformation only and does not represent a different standard sieve size1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the u
6、ser of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.(WarningFreshhydraulic cementitous mixtures are caustic and may causechemical burns to exposed skin and tissue upon prolongedexposure.)21.4 This internat
7、ional 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)Committ
8、ee.2.Referenced Documents2.1 ASTM Standards:3C33/C33M Specification for Concrete AggregatesC40/C40M Test Method for Organic Impurities in FineAggregates for ConcreteC109/C109M Test Method for Compressive Strength ofHydraulic Cement Mortars(Using 2-in.or 50-mm CubeSpecimens)C125 Terminology Relating
9、to Concrete and Concrete Ag-gregatesC128 Test Method for Relative Density(Specific Gravity)and Absorption of Fine AggregateC136/C136M Test Method for Sieve Analysis of Fine andCoarse AggregatesC150/C150M Specification for Portland CementC230/C230M Specification for Flow Table for Use in Testsof Hydr
10、aulic CementC305 Practice for Mechanical Mixing of Hydraulic CementPastes and Mortars of Plastic ConsistencyC511 Specification for Mixing Rooms,Moist Cabinets,Moist Rooms,and Water Storage Tanks Used in theTesting of Hydraulic Cements and ConcretesC670 Practice for Preparing Precision and Bias State
11、mentsfor Test Methods for Construction MaterialsC702/C702M Practice for Reducing Samples of Aggregateto Testing SizeD75/D75M Practice for Sampling AggregatesD3665 Practice for Random Sampling of Construction Ma-terialsE11 Specification for Woven Wire Test Sieve Cloth and TestSieves3.Terminology3.1 D
12、efinitions:1This test method is under the jurisdiction of ASTM Committee C09 onConcrete and Concrete Aggregates and is the direct responsibility of SubcommitteeC09.20 on Normal Weight Aggregates.Current edition approved May 1,2017.Published July 2017.Originally approvedin 1931.Last previous edition
13、approved in 2010 as C87/C87M10.DOI:10.1520/C0087_C0087M-17.2See section on Safety Precautions,Manual of Aggregate and Concrete Testing,Annual Book of ASTM Standards,Vol 04.02.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Ann
14、ual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*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
15、 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.
16、1.1 For definition of terms used in this test method,referto Terminology C125.4.Summary of Test Method4.1 A portion of the fine aggregate that produced a colordarker than the standard in Test Method C40/C40M is used toprepare mortar cube specimens.A separate portion of the samefine aggregate is washed in sodium hydroxide solution toremove the organic impurities that caused the failing resultwhen tested in accordance with Test Method C40/C40M,andthat washed fine aggregate is used to prepare anoth