1、Designation:D80619Standard Test Method forCement Content of Hardened Soil-Cement Mixtures1This standard is issued under the fixed designation D806;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
2、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 by chemicalanalysis of cement content of hardened soil-cement mixtures.1.2 UnitsThe values stated in SI un
3、its are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.3.1 For purposes of comparing a measured or calculatedvalue(s)with the
4、 specific limits,the measured or calculatedvalue(s)shall be rounded to the nearest decimal or significantdigits in the specific limits.1.3.2 The procedures used to specify how data are collected/recorded or calculated in the standard are regarded as industrystandard.In addition they are representati
5、ve of the significantdigits that generally should be retained.The procedures useddo not consider material variation,purpose for obtaining thedata,special purpose studies,or any considerations for theusers objectives;and it is common practice to increase orreduce significant digits of reported data t
6、o be commensuratewith these considerations.It is beyond the scope of thisstandard to consider significant digits used in analysis methodsfor the engineering design.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the us
7、er of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific hazard precautions,see Section 7.1.5 This international standard was developed in accor-dance with internationally recognized p
8、rinciples 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:2C114 Test Methods for Chemical A
9、nalysis of HydraulicCementC125 Terminology Relating to Concrete and Concrete Ag-gregatesC219 Terminology Relating to Hydraulic and Other Inor-ganic CementsD653 Terminology Relating to Soil,Rock,and ContainedFluidsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and R
10、ock by MassD2901 Test Method for Cement Content of Freshly MixedSoil-CementD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard
11、 Masses for Use in Soil,Rock,andConstruction Materials TestingD5982 Test Method for Determining Cement Content ofFresh Soil-Cement(Heat of Neutralization Method)D6026 Practice for Using Significant Digits in GeotechnicalData3.Terminology3.1 Definitions:3.1.1 For definitions of common technical terms
12、 used in thisstandard relating to soil,refer to Terminology D6533.1.2 Refer to Terminology C125 for definitions of commontechnical terms relating to concrete.3.1.3 Refer to Terminology C219 for definitions of commontechnical terms relating to cement.4.Summary of Test Method4.1 Samples of the raw soi
13、l,cement and soil-cement mix-tures are obtained and analyzed.Hydrochloric acid is added toeach sample and the resulting precipitate discarded.The1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.15 on Stabilization W
14、ithAdmixtures.Current edition approved Dec.1,2019.Published January 2020.Originallyapproved in 1944.Last previous edition approved in 2011 as D80611.DOI:10.1520/D0806-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual B
15、ook 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 stan
16、dard 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.remaining filtrate is made slightly ammonaical and the hydrox-ides are allowed to settle out.The precipitate is washed withammonium nitrate and the hydroxides are dissolved withhydrochloric acid.The solution i
