ASTM_C_1084_-_10.pdf

Designation:C108410Standard Test Method forPortland-Cement Content of Hardened Hydraulic-CementConcrete1This standard is issued under the fixed designation C1084;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.1.Scope*1.1 This test method covers the determination of portland-cement content of a sample of hardened hydraulic-cementconcrete.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forinformation purposes only.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.Disposal of some orall of the chemicals used in this method may require adherenceto EPA or other regulatory guidelines.2.Referenced Documents2.1 ASTM Standards:2C42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC114 Test Methods for Chemical Analysis of HydraulicCementC670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsC702 Practice for Reducing Samples ofAggregate to TestingSizeC823 Practice for Examination and Sampling of HardenedConcrete in ConstructionsC856 Practice for Petrographic Examination of HardenedConcreteD1193 Specification for Reagent WaterE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE832 Specification for Laboratory Filter Papers3.Significance and Use3.1 This test method consists of two independent proce-dures:an oxide-analysis procedure that consists of two sub-procedures and an extraction procedure.Each procedure re-quires a substantial degree of chemical skill and relativelyelaborate chemical instrumentation.Except for the influence ofknown interferences,determined cement contents are normallyequal to,or slightly greater than,actual values except for theMaleic Acid procedure where results can also be significantlylow when the paste is carbonated(Note 1).NOTE1With certain limitations,the procedure is also applicable forestimating the combined content of portland cement and pozzolan or slagin concretes made with blended hydraulic cement and blends of portlandcement with pozzolans or slags.The results of this test method whenapplied to concretes made with blended cements or pozzolans depend onthe composition of the pozzolan,the age of the concrete,the extent ofreaction of the pozzolan and the fact that this test method may determineonly the portland-cement component of a blended cement.The testmethod should be applied to determination of the blended cement contentor the pozzolanic content only by use of calibration concrete samples orother information.Earlier versions of this test method can provide usefulinformation as detailed by Hime3and Minnick.44.Interferences4.1 Many constituents of concrete may interfere with theanalysis of the concrete for portland-cement content.Thefollowing limited lists of materials have been provided as aguide.The rocks,minerals or mineral admixtures listed willinterfere with the cement content determination to the extent oftheir solubility during the dissolution procedure used.Thesolubility of rocks,minerals or mineral admixtures may dependon the fineness of the test sample,the water-cement ratio of theconcrete,the extent of hydration,and the age of the concrete1This method is under the jurisdiction of ASTM Committee C09 on Concreteand ConcreteAggregatesand is the direct responsibility of Subcommittee C09.69 onMiscellaneous Tests.Current edition approved April 1,2010.Published May 2010.Originallyapproved in 1987.Last previous edition approved in 2002 as C108402.DOI:10.1520/C1084-10.2For 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.3Hime,W.G.,“Cement Content,”Significance of Tests and Properties ofConcrete and Concrete-Making Materials,ASTM STP 169B,ASTM,1978,pp.462470,and“Analyses for Cement and Other Materials in Hardened Concrete,”Chapter 29,Significant of Tests and Properties of Concrete and Concrete-MakingMaterials,ASTM STP 169C,1994,pp.315319.4Minnick,L.J.,“Cement-Content,Hardened Concrete,”Significance of Testsand Properties of Concrete and Concrete-Making Materials,ASTM STP 169A,ASTM,1966,p.326329.*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 States1(extended exposure to the high pH of the concrete may affectthe solubility of some minerals).4.2 Substances Affecting