【英文标准名称】:StandardPracticeforThickWall,Ring-Lined,SplitBarrel,DriveSamplingofSoils
【原文标准名称】:土壤的厚壁环衬分隔筒取样的标准实施规程
【标准号】:ASTMD3550-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:D18.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:抽样方法;施工材料;土壤
【英文主题词】:penetrationresistance;ringlined;soilsampling;splitbarrel
【摘要】:Thispracticeisusedforgeneralsoilinvestigationswheresamplesarerequiredforidentificationandtesting.DisturbedsamplescanbeclassifiedinaccordancewithPracticeD2487andcanbetestedformoisturecontent,particlesize,andAtterberglimits.Thesamplercanbeequippedwithstackedringliners,whichcanbeuseddirectlyforotherlaboratorytests.Thesamplercanbedrivenwithahammerandthepenetrationresistancecanberecorded.Numerouscombinationsofhammersizeanddropheighthavebeenusedinpractice.Hammersizeanddropheightshouldbereported.Usersofthispracticehavederivedlocalcorrelationsofpenetrationresistanceandengineeringpropertiesbasedonlocalconditionsandaparticularhammersystemandsampler,however,thepenetrationresistancemaydifferfromTestMethodD1586.Theusershouldevaluatesamplequality.Theprocessofdrivingthesamplemaydisturbthesoilandchangetheengineeringproperties.Insoftsoils,useofthethinwalltubesampler(PracticeD1587)willlikelyresultinlessdisturbance.Inhardersoils,soilcoringtechniquesmayresultinlessdisturbance;seePracticeD6151,GuideD6169.Thisstandardaddressessamplingindrillholeswithdrillingequipment.Thesamplercanbehanddrivenordrivenintestpitswithoutdrillingequipment.Ifthesespecialdrivingmethodsareusedthesamplingprocessshouldbereported.1.1Thispracticecoversprocedureforthickwall,splitbarreldrivesamplingofsoiltoobtainrepresentativesamplesofsoilforclassificationandlaboratorytesting.Thesamplerisconsideredtobeathickwallsamplerwithsharpenedcuttingshoeandballcheckvent.Themiddlebarrelsectionisoftenofsplitbarreldesign,butasolidbarrelcanbeusedandbothmaycontainringliners.Thesamplerisoftendriven,butcanalsobepushedinsofterdeposits.Penetrationresistancedatamayberecorded.ThisstandardusesproceduressimilartoTestMethodD1586onPenetrationResistanceandSplitBarrelSamplingofSoils.However,inthispractice,differinghammerweights,dropheights,anddifferentsizesamplersareused,sothedatamustnotbereportedasconformingtoTestMethodD1586andcannotbeusedtodetermineNormalizedpenetrationresistancedataforsandsinaccordancewithPracticeD6066.1.2Thispracticeinvolvesuseofrotarydrillingequipment(GuideD5783,PracticeD6151).Otherdrillingandsamplingprocedures(GuideD6286,GuideD6169)areavailableandmaybemoreappropriate.Considerationsforhanddrivingorshallowsamplingwithoutboreholesarenotaddressed.SubsurfaceinvestigationsshouldberecordedinaccordancewithpracticeGuideD5434.SoilsamplesshouldbeclassifiedinaccordancewithPracticeD2488.1.3Thispracticemayormaynotprovideasamplesuitableforadvancedlaboratorytestssuchasshearorconsolidationtesting.Itisuptotheusertodetermineifthesamplequalityissuitableforadvancedlaboratorytestingforengineeringproperties.DrivensamplescanbemoreeasilydisturbedthanpushedsamplessuchasthethinwalltubeinaccordancewithPracticeD1587.However,thinwalltubescannotbeusedinhardersoils.Incaseswhereithasbeenestablishedthatthequalityofthethickwalldrivensampleisadequate,thispracticemayprovideshearandconsolidationspecimensthatcanbeuseddirectlyinthetestapparatuswithoutpriortrimming.Sometypesofsoilsmaygainorlosesignificantshearstrengthorcompressibility,orboth,asaresultofsampling.Incaseslikethese,suitablecomparisontestsshouldbemadetoevaluatetheeffectofsampledisturbanceonshearstrengthandcompressibility.1.4Thisguidedoesnotpurportt......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:5P.;A4
【正文语种】: