ASTM_D_1634_-_17.pdf

Designation:D163417Standard Test Method forCompressive Strength of Soil-Cement Using Portions ofBeams Broken in Flexure(Modified Cube Method)1This standard is issued under the fixed designation D1634;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 the com-pressive strength of soil-cement,using portions of beamsbroken in flexure in accordance with Test Method D1635,astest specimens.1.2 UnitsThe values stated in inch-pound units are to beregarded as standard,except as noted below.The values givenin parentheses are mathematical conversions to SI units,whichare provided for information only and are not consideredstandard.1.2.1 The gravitational system of inch-pound units is usedwhen dealing with inch-pound units.In this system,the pound(lbf)represents a unit of force(weight)while the unit for massis slugs.1.2.2 The slug unit of mass is almost never used incommercial practice;that is,density,balances,etc.Therefore,the standard unit for mass in this standard is either kilogram(kg)or gram(g),or both.Also,the equivalent inch-pound unit(slug)is not given/presented in parantheses.1.2.3 It is common practice in the engineering/constructionprofession to concurrently use pounds to represent both a unitof mass(lbm)and of force(lbf).This implicitly combines twoseparate systems of units;that is,the absolute system and thegravitational system.It is scientifically undesirable to combinethe use of two separate sets of inch-pound units within a singlestandard.As stated,this standard includes the gravitationalsystem of inch-pound units and does not use/present the slugunit for mass.However the use of balances or scales,recordingpounds of mass(lbm)or recording density in lbm/ft3shall notbe regarded as nonconformance with this standard.1.3 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026 unless superseded by this test method.1.3.1 The procedures used to specify how data are collected/recorded and calculated in the standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof these test methods to consider significant digits used inanalysis methods for engineering data.1.4 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 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:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1632 Practice for Making and Curing Soil-Cement Com-pression and Flexure Test Specimens in the LaboratoryD1633 Test Methods for Compressive Strength of MoldedSoil-Cement CylindersD1635 Test Method for Flexural Strength of Soil-CementUsing Simple Beam with Third-Point LoadingD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD6026 Practice for Using Significant Digits in GeotechnicalData1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.15 on Stabilization WithAdmixtures.Current edition approved Nov.1,2017.Published November 2017.Originallyapproved in 1959.Last previous edition approved in 2006 as D1634 00(2006),which was withdrawn in July 2015 and reinstated in November 2017.DOI:10.1520/D1634-17.2For 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.*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 dev