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【英文标准名称】:StandardTestMethodforDensityandUnitWeightofSoilinPlacebytheSleeveMethod
【原文标准名称】:用套筒法现场测试土壤密度和单位重量的标准试验方法
【标准号】:ASTMD4564-2008
【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】:compactioncontrol;densitytesting;fielddensity;fieldtest;in-placedensity;qualitycontrol;relativedensity;soilcompaction;soiltest;Calibration--soil/rockanalysisinstrumentation;Cohesionlesssoil;Compactionmeasurement--soils;Densi
【摘要】:Thistestmethodisusedtodeterminethedensityofcohesionlesssoilusedintheconstructionofearthembankmentsandroadfills,orofcohesionlesssoilsusedforstructurebackfill,beddingandbackfillforpipe,orfilters.Thistestmethodisusedasthebasisforacceptanceofsoilscompactedtoaspecifieddensityortoaspecifiedrelativedensity.Thistestmethodmaybeusefulindeterminingthedensityofcohesionlesssoilsinaconfinedorlimitedspacesincethistestmethodrequireslessworkingareathanothermethods.Apredeterminedcalibrationequationisnecessarytousethisprocedure(seeAnnexA1).Itisassumedthereisalinearrelationshipbetweenthedensityinplaceandthemassofdrysoilperinchoftestholemeasuredbythesleevemethod.Thismaynotbetrueforcertainsoilsorthelinearrelationshipmayexistonlyforaparticularrangeofdensities.Thequalityoftheresultsproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors:PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofthedensityofsoilinplacebythesleevemethod.1.2Thesleevemethodofdeterminingthedensityofsoilinplaceisusedforcohesionless,granularsoilsforwhichothermethodsofdeterminingthedensity(sandcone,testpit,andthelike)maynotbepractical.Typically,thesleevemethodisapplicableforsoilsthatarepredominantlyfinegravelsize,withamaximumof5%fines,andamaximumparticlesizeofx00BE;in.(19.0mm).Note18212;Therehavebeenothermethodsdevelopedfortestingcohesionlesssoils.Comparedtoothermethods,thisprocedureisconvenientforfieldconstructioncontroltestingbecausesmallerandlighterequipmentisusedandthetestcanbeperformedinasmallerarea.1.3Acalibrationequationisnecessaryintheapplicationofthistestmethodtoobtainareliablevalueofthein-placedensityofthesoil(seeAnnexA1).Thecalibrationequationisusedtocalculatethedensityofthesoilinplacefromthemassofdrysoilperinchoftestholemeasuredbythesleevemethod.1.3.1Thecalibrationequationispredeterminedforaparticularsoiltypethatistobetested.Whenthesoilchangessignificantlyineithergradationorparticleangularity,thecalibrationequationmayhavetobeadjustedorredefinedbeforethesleevemethodcanbeused.1.3.2Theremaybecertainsoilsmeetingthegeneraldescriptionin1.2forwhichacalibrationequationmaynotbeappropriateduetounsatisfactorycorrelationofthedata.Thesleevemethodwouldnotbeapplicableforthesesoils.1.3.3Theremaybecertainsoilsmeetingthedescriptionin1.2forwhichthecalibrationequationmaybeapplicableonlyforacertainrangeofdensities.Thesleevemethodwillgivereliablevaluesofthedensityinplaceonlywithinthatrangeofdensities.1.4Thistestmethodusesinch-poundunitswithSIrationalizedunits;thatis,acombinedstandard.1.4.1ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresult......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:9P.;A4
【正文语种】:英语