【英文标准名称】:StandardTestMethodforDeterminingLiquidusTemperatureofImmobilizedWasteGlassesandSimulatedWasteGlasses
【原文标准名称】:固化废料玻璃和仿废料玻璃的液态温度测定的标准试验方法
【标准号】:ASTMC1720-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C26.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:校正;梯度炉;液态温度;统一
【英文主题词】:calibration;gradientfurnace;liquidustemperature;uniform
【摘要】:Thisprocedurecanbeusedfor(butislimitedto)thefollowingapplications:(1)supportglassformulationdevelopmenttomakesurethatprocessingcriteriaaremet,(2)supportproduction(forexample,processingortroubleshooting),and(3)supportmodelvalidation.1.1Thesepracticescoverproceduresfordeterminingtheliquidustemperature(TL)ofnuclearwaste,mixednuclearwaste,simulatednuclearwaste,orhazardouswasteglassinthetemperaturerangefrom600x00B0;Cto1600x00B0;C.ThismethoddiffersfromPracticeC829inthatitemploysadditionalmethodstodetermineTL.TLisusefulinwasteglassplantoperation,glassformulation,andmelterdesigntodeterminetheminimumtemperaturethatmustbemaintainedinawasteglassmelttomakesurethatcrystallizationdoesnotoccurorisbelowaparticularconstraint,forexample,1volume%crystallinityorT1%.Asofnow,manyinstitutionsstudyingwasteandsimulatedwastevitrificationarenotinagreementregardingthisconstraint(1).1.2Threemethodsareincluded,differingin(1)thetypeofequipmentavailabletotheanalyst(thatis,typeoffurnaceandcharacterizationequipment),(2)thequantityofglassavailabletotheanalyst,(3)theprecisionandaccuracydesiredforthemeasurement,and(4)candidateglassproperties.Theglassproperties,forexample,glassvolatilityandestimatedTL,willdictatetherequiredmethodformakingthemostprecisemeasurement.ThethreedifferentapproachestomeasuringTLdescribedhereincludethefollowing:(A)GradientTemperatureFurnaceMethod(GT),(B)UniformTemperatureFurnaceMethod(UT),and(C)CrystalFractionExtrapolationMethod(CF).Thisprocedureisintendedtoprovidespecificworkprocesses,butmaybesupplementedbytestinstructionsasdeemedappropriatebytheprojectmanagerorprincipleinvestigator.Themethodsdefinedherearenotapplicabletoglassesthatformmultipleimmiscibleliquidphases.Immiscibilitymaybedetectedintheinitialexaminationofglassduringsamplepreparation(see9.3).However,immiscibilitymaynotbecomeapparentuntilaftertestingisunderway.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:81_040_10
【页数】:21P.;A4
【正文语种】: