DIN 2281 T.3-1982 螺纹过端塞规.精密机械用螺纹公称直径为40至250mm的ISO米制螺纹用过端工作量规和检验量规
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【英文标准名称】:GOworkshopscrewpluggaugesandcheckplugsforISOmetricscrewthreadsover40mmupto250mmnominaldiameterforuseinprecisionengineering
【原文标准名称】:螺纹过端塞规.精密机械用螺纹公称直径为40至250mm的ISO米制螺纹用过端工作量规和检验量规
【标准号】:DIN2281T.3-1982
【标准状态】:作废
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【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
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【英文标准名称】:StandardTestMethodforDeterminationoftheProportionofPhasesinPortlandCementandPortland-CementClinkerUsingX-RayPowderDiffractionAnalysis
【原文标准名称】:用X射线粉末衍射分析法测定硅酸盐水泥和硅酸盐水泥熔渣阶段比的标准试验方法
【标准号】:ASTMC1365-2006
【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】:C01.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:铝酸盐;熔渣;衍射计;铁酸盐;材料试验;相位;硅酸盐水泥;X射线分析
【英文主题词】:allite;alkalisulfate;aluminate;belite;cement;clinker;diffractometer;ferrite;periclase;phaseanalysis;quantitativeX-raypowderdiffractionanalysis;QXRD;Rietveldanalysis;X-raypowderdiffraction;XRD
【摘要】:Thistestmethodallowsdirectdeterminationoftheproportionofsomeindividualphasesincementorportland-cementclinker.ThusitprovidesanalternativetotheindirectestimationofphaseproportionusingtheequationsinSpecificationC150(AnnexA1).ThistestmethodassumesthattheoperatorisqualifiedtooperateanX-raydiffractometerandtointerpretX-raydiffractionspectra.Thistestmethodmaybeusedaspartofaqualitycontrolprogramincementmanufacturing.Thistestmethodmaybeusedinpredictingpropertiesandperformanceofhydratedcementandconcretethatareafunctionofphasecomposition.QXRDprovidesabulkanalysis(thatis,theweightedaveragecompositionofseveralgramsofmaterial).Therefore,resultsmaynotagreepreciselywithresultsofmicroscopicalmethods.1.1Thistestmethodcoversdirectdeterminationoftheproportionbymassofindividualphasesinportlandcementorportland-cementclinkerusingquantitativeX-ray(QXRD)analysis.Thefollowingphasesarecoveredbythisstandard:alite(tricalciumsilicate),belite(dicalciumsilicate),aluminate(tricalciumaluminate),ferrite(tetracalciumaluminoferrite),periclase(magnesiumoxide),gypsum(calciumsulfatedihydrate),bassanite(calciumsulfatehemihydrate),anhydrite(calciumsulfate),andcalcite(calciumcarbonate).1.2Thistestmethodspecifiescertaingeneralaspectsoftheanalyticalprocedure,butdoesnotspecifydetailedaspects.Recommendedproceduresaredescribed,butnotspecified.Regardlessoftheprocedureselected,theusershalldemonstratebyanalysisofcertifiedreferencematerials(CRM''s)thattheparticularanalyticalprocedureselectedforthispurposequalifies(thatis,providesacceptableprecisionandbias)(seeNote1).Therecommendedproceduresareonesusedintheround-robinanalysestodeterminetheprecisionlevelsofthistestmethod.Note0AsimilarapproachwasusedintheperformancerequirementsforalternativemethodsforchemicalanalysisinTestMethodsC114.1.3ThevaluesstatedinSIunitsshallberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazards,seeSection9.
【中国标准分类号】:Q12
【国际标准分类号】:91_100_10
【页数】:10P.;A4
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