Designation:D1632−17´1StandardPracticeforMakingandCuringSoil-CementCompressionandFlexureTestSpecimensintheLaboratory1ThisstandardisissuedunderthefixeddesignationD1632;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—DODstatementwasaddededitoriallyinMarch2020.1.Scope*1.1Thispracticecoverstheprocedureformakingandcuringcompressionandflexuretestspecimensofsoil-cementinthelaboratoryunderaccuratecontrolofquantitiesofmaterialsandtestconditions.1.2Units—Thevaluesstatedininch-poundunitsaretoberegardedasstandard,exceptasnotedbelow.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunits,whichareprovidedforinformationonlyandarenotconsideredstandard.SievesizesareidentifiedbythestandarddesignationinSpecificationE11.Thealternativesievesizedesignationgiveninparenthesesisforinformationonlyanddoesnotrepresentadifferentstandardsievesize.1.2.1Thegravitationalsystemofinch-poundunitsisusedwhendealingwithinch-poundunits.Inthissystem,thepound(lbf)representsaunitofforce(weight)whiletheunitformassisslugs.1.2.2Theslugunitofmassisalmostneverusedincommercialpractice;thatis,density,balances,etc.Therefore,thestandardunitformassinthisstandardiseitherkilogram(kg)orgram(g),orboth.Also,theequivalentinch-poundunit(slug)isnotgiven/presentedinparantheses.1.2.3Itiscommonpracticeintheengineering/constructionprofessiontoconcurrentlyusepoundstorepresentbothaunitofmass(lbm)andofforce(lbf).Thisimplicitlycombinestwoseparatesystemsofunits;thatis,theabsolutesystemandthegravitationalsystem.Itisscientificallyundesirabletocombinetheuseoftwoseparatesetsofinch-poundunitswithinasinglestandard.Asstated,thisstandardincludesthegravitationalsystemofinch-poundunitsanddoesnotuse/presenttheslugunitformass.Howevertheuseofbalances...
