ASTM C135-1996(2009)e1 用水浸法测定耐火材料的准确比重的标准试验方法

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【英文标准名称】:StandardTestMethodforTrueSpecificGravityofRefractoryMaterialsbyWaterImmersion
【原文标准名称】:用水浸法测定耐火材料的准确比重的标准试验方法
【标准号】:ASTMC135-1996(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:C08.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:nonhydratable;pycnometer;refractorymaterial;truespecificgravity;waterimmersion;Refractories(general);Specificgravity--refractorymaterials;Truespecificgravity;Waterimmersiontesting
【摘要】:Thetruespecificgravityofamaterialistheratioofitstruedensity,determinedataspecifictemperature,tothetruedensityofwater,determinedataspecifictemperature.Thus,thetruespecificgravityofamaterialisaprimarypropertywhichisrelatedtochemicalandmineralogicalcomposition.Forrefractoryrawmaterialsandproductsthetruespecificgravityisausefulvaluefor:classification,detectingdifferencesinchemicalcompositionbetweensupposedlylikesamples,indicatingmineralogicalphasesorphasechanges,calculatingtotalporositywhenthebulkdensityisknown,andforanyothertestmethodwhichrequiresthisvalueforthecalculationofresults.Thistestmethodisaprimarystandardmethodwhichissuitableforuseinspecifications,qualitycontrol,andresearchanddevelopment.Itcanalsoserveasarefereetestmethodinpurchasingcontractsoragreements.Fundamentalassumptionsinherentinthistestmethodarethefollowing:Thesampleisrepresentativeofthematerialingeneral,Thetotalsamplehasbeenreducedtotheparticlesizespecified,Noimpurityhasbeenintroducedduringprocessingofthesample,Thesampleitselfisnotmagneticandallmagneticmaterialintroducedduringprocessingofthesamplehasbeenremoved,Thematerialisnothydratableorreactivewithwater,andThetestmethodhasbeenconductedinameticulousmanner.Deviationfromanyoftheseassumptionsnegatestheusefulnessoftheresults.Ininterpretingtheresultsofthistestmethoditmustberecognizedthatthespecifiedsampleparticlesizedoesnotguaranteethatallclosedporeshavebeeneliminated.Theamountofresidualclosedporesmayvarybetweenmaterialsorevenbetweensamplesofthesameorlikematerials,andthespecifiedsampleparticlesizeisnotthesameasthatspecifiedforTestMethodC604.Thevaluesgeneratedbythistestmethodmay,therefore,becloseapproximationsratherthanaccuraterepresentationsoftruespecificgravities.Thus,comparisonsofresultsshouldonlybejudiciouslymadebetweenlikematerialstestedbythistestmethodorwithfullrecognitionofpotentiallyinherentdifferencesbetweenthematerialsbeingcomparedorthetestmethodused.1.1Thistestmethodcoversthedeterminationoftruespecificgravityofrefractorymaterialsunderprescribedconditions.Itisnotapplicabletomaterialsattackedbywater.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.2.1Exception8212;TheequipmentusedinthisstandardforweightsandvolumesisonlyavailableinSIunits.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:3P.;A4
【正文语种】:英语