ASTM D2167-2008 用橡胶气球法现场测试土壤密度和单位重量的标准试验方法

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【英文标准名称】:StandardTestMethodforDensityandUnitWeightofSoilinPlacebytheRubberBalloonMethod
【原文标准名称】:用橡胶气球法现场测试土壤密度和单位重量的标准试验方法
【标准号】:ASTMD2167-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acceptancetests;balloontest;compactiontests;degreeofcompaction;densitometertest;densitytests;fieldcontroltests;inplacedensity;inplacedrydensity;insitudensity;relativedensity;soiltests;unitweight;Backfill--testing;
【摘要】:Thistestmethodcanbeusedtodeterminethein-placedensityandunitweightofnaturalinorganicsoildeposits,soil-aggregatemixtures,orothersimilarfirmmaterials.Itisoftenusedasabasisofacceptanceforearthenmaterialcompactedtoaspecifieddensityorpercentageofamaximumdensitydeterminedbyatestmethod,suchasTestMethodsD698,D1557orD4253.TestMethodsD698andD1557requirethatmassmeasurementsoflaboratorycompactedtestspecimensbedeterminedtothenearest1gsothatcomputedwatercontentsanddensitiescanbereportedtothreeandfoursignificantdigits,respectively.Thisstandardisafieldprocedurerequiringmassmeasurementstothenearest5g.Assuch,watercontentcalculationsshouldonlybereportedtotwosignificantdigitsanddensitytothreesignificantdigits.Thistestmethodmaybeusedtodeterminethedensityandunitweightofcompactedsoilsusedinconstructionofearthembankments,roadfill,andstructuralbackfill.Thistestmethodoftenisusedasabasisofacceptanceforsoilscompactedtoaspecifieddensityorapercentageofmaximumdensityorunitweight,asdeterminedbyastandardtestmethod.Theuseofthistestmethodisgenerallylimitedtosoilinanunsaturatedconditionandisnotrecommendedforsoilsthataresoftorthatdeformeasily.Suchsoilsmayundergoavolumechangeduringtheapplicationofpressureduringtesting.Thistestmethodmaynotbesuitableforsoilscontainingcrushedrockfragmentsorsharpedgematerialswhichmaypuncturetherubbermembrane.Note18212;Notwithstandingthestatementsonprecisionandbiascontainedinthistestmethod,theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandthefacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliabletesting.Reliabletestingdependsonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofthein-placedensityandunitweightofcompactedorfirmlybondedsoilusingarubberballoonapparatus.1.2Thistestmethodissuitableforuseasameansofacceptanceforcompactedfillorembankmentsconstructedoffine-grainedsoilsorgranularsoilswithoutappreciableamountsofrockorcoarsematerial.1.3Thistestmethodalsomaybeusedforthedeterminationofthein-placedensityandunitweightofundisturbedorinsitusoils,providedthesoilwillnotdeformunderthepressuresimposedduringthetest.1.4Thistestmethodisnotsuitableforuseinorganic,saturated,orhighlyplasticsoilsthatwoulddeformunderthepressuresappliedduringthistest.Thistestmethodmayrequirespecialcareforuseon(1)soilsconsistingofunbondedgranularmaterialsthatwillnotmaintainstablesidesinasmallhole,(2)soilscontainingappreciableamountsofcoarsematerialinexcessof37.5mm(1x00BD;in.),(3)granularsoilshavinghighvoidratios,or(4)fillmaterialscontainingparticleswithsharpedges.Forsoilscontainingappreciableamountsofparticlesinexcessof37.5mm(11/2in.),TestMethodsD4914orD5030shouldbeused.1.5T......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:6P.;A4
【正文语种】:英语