【英文标准名称】:StandardTestMethodsforSpecificGravityofSoilSolidsbyWaterPycnometer
【原文标准名称】:水比重瓶法测定土壤固体物的比重的标准试验方法
【标准号】:ASTMD854-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D18.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Pycnometer/pycnometry;Soil;Specificgravity--soil
【摘要】:Thespecificgravityofasoilsolidsisusedincalculatingthephaserelationshipsofsoils,suchasvoidratioanddegreeofsaturation.Thespecificgravityofsoilsolidsisusedtocalculatethedensityofthesoilsolids.Thisisdonebymultiplyingitsspecificgravitybythedensityofwater(atpropertemperature).Thetermsoilsolidsistypicallyassumedtomeannaturallyoccurringmineralparticlesorsoillikeparticlesthatarenotreadilysolubleinwater.Therefore,thespecificgravityofsoilsolidscontainingextraneousmatter,suchascement,lime,andthelike,water-solublematter,suchassodiumchloride,andsoilscontainingmatterwithaspecificgravitylessthanone,typicallyrequirespecialtreatment(seeNote1)oraqualifieddefinitionoftheirspecificgravity.Thebalances,pycnometersizes,andspecimenmassesareestablishedtoobtaintestresultswiththreesignificantdigits.Note28212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodscoverthedeterminationofthespecificgravityofsoilsolidsthatpassthe4.75-mm(No.4)sieve,bymeansofawaterpycnometer.Whenthesoilcontainsparticleslargerthanthe4.75-mmsieve,TestMethodC127shallbeusedforthesoilsolidsretainedonthe4.75-mmsieveandthesetestmethodsshallbeusedforthesoilsolidspassingthe4.75-mmsieve.1.1.1Soilsolidsforthesetestmethodsdonotincludesolidswhichcanbealteredbythesemethods,contaminatedwithasubstancethatprohibitstheuseofthesemethods,orarehighlyorganicsoilsolids,suchasfibrousmatterwhichfloatsinwater.Note18212;TheuseofTestMethodD5550maybeusedtodeterminethespecificgravityofsoilsolidshavingsolidswhichreadilydissolveinwaterorfloatinwater,orwhereitisimpracticabletousewater.1.2Twomethodsforperformingthespecificgravityareprovided.Themethodtobeusedshallbespecifiedbytherequestingauthority,exceptwhentestingthetypesofsoilslistedin1.2.11.2.1MethodA8212;ProcedureforMoistSpecimens,describedin9.2.Thisprocedureisthepreferredmethod.Fororganicsoils;highlyplastic,finegrainedsoils;tropicalsoils;andsoilscontaininghalloysite,MethodAshallbeused.1.2.2MethodB8212;ProcedureforOven-DrySpecimens,describedin9.3.1.3AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.3.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedin......
【中国标准分类号】:B11
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语