ASTM_D_1633_-_17.pdf

Designation:D163317Standard Test Methods forCompressive Strength of Molded Soil-Cement Cylinders1This standard is issued under the fixed designation D1633;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the com-pressive strength of soil-cement using molded cylinders as testspecimens.1.2 Two alternative procedures are provided as follows:1.2.1 Method AThis procedure uses a test specimen pre-pared in a mold complying with Test Methods D698(4.0 in.(101.6 mm)in diameter and 4.6 in.(116.8 mm)in height),sometimes referred to as a proctor mold,resulting in a heightover diameter ratio of 1.15.This test method may be used onlyon materials with 30%or less retained on the 19.0-mm(34-in.)sieve.See Note 2.1.2.2 Method BThis procedure uses a test specimen witha height over diameter ratio of 2.0 prepared in a cylindricalmold in accordance with Practice D1632(2.8 in.(71.1 mm)indiameter and 9.0 in.(229 mm)in height).This test method isapplicable to those materials that pass the 4.75-mm(No.4)sieve.1.3 UnitsThe values stated in inch-pound units are to beregarded as standard,except as noted in below.The valuesgiven in parentheses are mathematical conversions to SI units,and are provided for information only and are not consideredstandard.Sieve sizes are identified by the standard designationsin Specification E11.The alternative sieve size designationgiven in parentheses is for information only and does notrepresent a different standard sieve size.1.3.1 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.1.3.2 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 parentheses.1.3.3 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.1.4 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026 unless superseded by this test method.1.4.1 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.1.5 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.1.6 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.1This 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 2007 as D1633 00(2007),which was withdrawn in July 2016 and reinstated in November 2017.DOI:10.1520/D1633-17.*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 developed in