Designation:D6128−14StandardTestMethodforShearTestingofBulkSolidsUsingtheJenikeShearCell1ThisstandardisissuedunderthefixeddesignationD6128;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thismethod2coverstheapparatusandproceduresformeasuringthecohesivestrengthofbulksolidsduringbothcontinuousflowandafterstorageatrest.Inaddition,measure-mentsofinternalfriction,bulkdensity,andwallfrictiononvariouswallsurfacesareincluded.1.2Thisstandardisnotapplicabletotestingbulksolidsthatdonotreachthesteadystaterequirementwithinthetravellimitoftheshearcell.Itisdifficulttoclassifyaheadoftimewhichbulksolidscannotbetested,butoneexamplemaybethoseconsistingofhighlyelasticparticles.1.3Themostcommonuseofthisinformationisinthedesignofstoragebinsandhopperstopreventflowstoppagesduetoarchingandratholing,includingtheslopeandsmooth-nessofhopperwallstoprovidemassflow.Parametersforstructuraldesignofsuchequipmentalsomaybederivedfromthisdata.1.4AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.4.1Theproceduresusedtospecifyhowdataarecollected/recordedorcalculated,inthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.5Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasureareincludedinthisstandard1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associate...
