【英文标准名称】:Methodsoftestingcement—Part4:Quantitativedeterminationofconstituents
【原文标准名称】:水泥的测试方法.第4部分:组分的定量测定
【标准号】:BSPDCEN/TR196-4-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-11-30
【实施或试行日期】:2007-11-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisEuropeanTechnicalReportdescribesproceduresfordeterminingthecontentsofmostoftheconstituentsofthecementsthatfallwithinthescopeofEN197-1.Inprinciple,themethoddescribedinClause6appliestoallcements,whateverthenumberandnatureoftheirconstituents,butinpracticeislimitedtothecementsidentifiedinTable1.Themethodinclause6shouldbeconsideredtobethemethodofchoiceandisbasedonasequentialselectivedissolutionofthecement’sconstituents,generallyofanunknownnumber,wheretheyarenotavailableseparatelyforanalysisatthesametimeasthecement.Themethodofchoiceenablesthequantitativedetermination(bymass)of:Portlandcementclinker,blastfurnaceslag,siliceousflyash,naturalpozzolans,limestone,silicafumeandsetregulatorsincementsofthetypesidentifiedinTable1.Table1isderivedfromTable1ofEN197-1.Themethodofchoicehaslimitations,asindicatedearlier,andcannotbeconsideredtobeameansbywhichclinkercontentcansimplybedeterminedinisolationfromanyotherconstituent.Clinkercontentisdetermined‘bydifference’andotherconstituentscontain,inpart,mineralphasessimilartothosepresentinclinkerandcancauseinterferencesthatleadtodifficultiesininterpretationoftheresults.Whereapparentlyanomalousresultsareobtained,itisrecommendedthatfurtherinvestigationsareundertakeninaccordancewiththeproceduregiveninSection6.2.5.4.Anyothermethodwiththesameobjectives,andintendedforusewheretheconstituentsareunavailableforseparateanalysis,canbeconsideredtobeanalternativetothemethodofchoicewhenitisshownthat,withappropriatestatisticalvalidity,itgivesequivalentresults.Inindividualcases,wherethelaboratoryhasbeenformallyadvisedthat:?thecementcontainsonlytwoconstituents,themethodisgreatlysimplifiedbecauseitissufficienttodeterminethesetregulatorcontent(R)inordertobeabletocalculatetheclinkercontentbydifference;?thecementcontainsonlythreeconstituents,i.e.asetregulator,clinkerandoneofthefollowingthree:slag,pozzolanaorsiliceousfIyash.Someofthemethodsinclause7arevariationsonthemethodofchoicewhereasothersarebasedonphysicalseparationofconstituentsanddifferentanalyticalprinciples.NOTE2ThisEuropeanTechnicalReportadoptsthefollowinguseoftermsformajorconstituents:?‘Portlandcementclinker’asdefinedinEN197-1isreferredtoas‘clinker’;?‘granulatedblastfurnaceslag’asdefinedinEN197-1isreferredtoas‘slag’;?‘naturalpozzolans’asdefinedinEN197-1isreferredtoas‘pozzolans’;?‘siliceousflyash’asdefinedinEN197-1isreferredtoas‘flyash’;?‘calciumsulfate’asdefinedinEN197-1isreferredtoas‘setregulator’.
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:38P.;A4
【正文语种】:英语


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