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【英文标准名称】:StandardTestMethodforUnconfinedCompressiveStrengthofCompactedSoil-LimeMixtures
【原文标准名称】:压实的土壤石灰混合物的无侧限抗压强度的标准试验方法法
【标准号】:ASTMD5102-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:limecontent;soil-lime;soil-stabilization;specimenpreparation;unconfinedcompressivestrength;Compressiontesting--soil;Compressiontesting--soil-cement;Limecontent--soil-limemixtures;Soil-limemixtures;Soilstabilization
【摘要】:Compressiontestingofsoil-limespecimensisperformedtodetermineunconfinedcompressivestrengthofthecuredsoil-lime-watermixturetodeterminethesuitabilityofthemixtureforusessuchasinpavementbasesandsubbases,stabilizedsubgrades,andstructuralfills.Compressivestrengthdataareusedinsoil-limemixdesignprocedures:(a)todetermineifasoilwillachieveasignificantstrengthincreasewiththeadditionoflime;(b)togroupsoil-limemixturesintostrengthclasses;(c)tostudytheeffectsofvariablessuchaslimepercentage,unitweight,watercontent,curingtime,curingtemperature,etc.;and(d)toestimateotherengineeringpropertiesofsoil-limemixtures.Limeisgenerallyclassifiedascalciticordolomitic.Usuallyinsoilstabilization,high-calciumlime[CaO]ordolomiticlime[CaO+MgO]areused.Thelimeistransformedfromoxidetohydroxideform[[Ca(OH)2or[Ca(OH)2+Mg(OH)2]]bytheadditionofwaterinthesoil,aslurrytank,oratamanufacturingfacility.Limemayincreasethestrengthofcohesivesoil.Thetypeoflimeincombinationwithsoiltypeinfluencestheresultingcompressivestrength.Note28212;TheagencyperformingthistestmethodcanbeevaluatedinaccordancewithPracticeD3740.Notwithstandingstatementsonprecisionandbiascontainedinthismethod:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilityused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnot,initself,ensurereliabletesting.Reliabletestingdependsonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthesefactors.1.1Thistestmethodcoversproceduresforpreparing,curing,andtestinglaboratory-compactedspecimensofsoil-limeandotherlime-treatedmaterials(Note1)fordeterminingunconfinedcompressivestrength.Thistestmethodcanbeusedforspecimenspreparedatthemaximumunitweightandoptimumwatercontent,orforspecimenspreparedatothertargetunitweightandwatercontentlevels.OtherapplicationsaregiveninSection5onSignificanceandUse.Note18212;Lime-basedproductsotherthancommercialquicklimeandhydratedlimearealsousedinthelimetreatmentoffine-grainedcohesivesoils.Limekilndust(LKD)iscollectedfromthekilnexhaustgasesbycyclone,electrostatic,orbaghouse-typecollectionsystems.SomelimeproducershydratevariousblendsofLKDplusquicklimetoproducealime-basedproduct.1.2Coredspecimensofsoil-limeshouldbetestedinaccordancewithTestMethodsD2166.1.3Twoalternativeproceduresareprovided:1.3.1ProcedureAdescribesproceduresforpreparingandtestingcompactedsoil-limespecimenshavingheight-to-diameterratiosbetween2.00and2.50.Thistestmethodprovidesthestandardmeasureofcompressivestrength.1.3.2ProcedureBdescribesproceduresforpreparingandtestingcompactedsoil-limespecimensusingTestMethods