ASTM D6128-2006 用Jenike剪切室行散装固体剪切试验的标准试验方法

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【英文标准名称】:StandardTestMethodforShearTestingofBulkSolidsUsingtheJenikeShearCell
【原文标准名称】:用Jenike剪切室行散装固体剪切试验的标准试验方法
【标准号】:ASTMD6128-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:墙壁摩擦角;体积密度;摩擦;粉末;剪切试验
【英文主题词】:bulksolid;cohesivestrength;effectiveangleoffriction;effectiveyieldlocus;flowfunction;internalfrictionangle;Jenikeshearcell;kinematicwallfrictionangle;powder;translationalsheartester;unconfinedyieldstrength;wallfriction
【摘要】:Reliable,controlledflowofbulksolidsfrombinsandhoppersisessentialinalmosteveryindustrialfacility.Unfortunately,flowstoppagesduetoarchingandratholingarecommon.Additionalproblemsincludeuncontrolledflow(flooding)ofpowders,segregationofparticlemixtures,useablecapacitywhichissignificantlylessthandesigncapacity,cakingandspoilageofbulksolidsinstagnantzones,andstructuralfailures.Bymeasuringtheflowpropertiesofbulksolids,anddesigningbinsandhoppersbasedontheseflowproperties,mostflowproblemscanbepreventedoreliminated.Forbulksolidswithasignificantpercentageofparticles(typically,onethirdormore)finerthanabout6mm(x00BC;in.),thecohesivestrengthisgovernedbythefines(-6-mmfraction).Forsuchbulksolids,cohesivestrengthandwallfrictiontestsmaybeperformedonthefinefractiononly.Note18212;Thequalityoftheresultproducedbythistestmethodisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.PracticeD3740wasdevelopedforagenciesengagedinthetestingand/orinspectionofsoilandrock.Assuchitisnottotallyapplicabletoagenciesperformingthistestmethod.However,usersofthistestmethodshouldrecognizethattheframeworkofPracticeD3740isappropriateforevaluatingthequalityofanagencyperformingthistestmethod.Currentlythereisnoknownqualifyingnationalauthoritythatinspectsagenciesthatperformthistestmethod.1.1Thismethodcoverstheapparatusandproceduresformeasuringthecohesivestrengthofbulksolidsduringbothcontinuousflowandafterstorageatrest.Inaddition,measurementsofinternalfriction,bulkdensity,andwallfrictiononvariouswallsurfacesareincluded.1.2Thisstandardisnotapplicabletotestingbulksolidsthatdonotreachthesteadystaterequirementwithinthetravellimitoftheshearcell.Itisimpossibletoclassifyaheadoftimewhichbulksolidscannotbetested,butoneexamplemaybethoseconsistingofhighlyelasticparticles.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.1.4Themostcommonuseofthisinformationisinthedesignofstoragebinsandhopperstopreventflowstoppagesduetoarchingandratholing,includingtheslopeandsmoothnessofhopperwallstoprovidemassflow.Parametersforstructuraldesignofsuchequipmentalsomaybederivedfromthisdata.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:19_060
【页数】:20P.;A4
【正文语种】: