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1、外文资料翻译TheHydrationofBlendedCementatLowW/BRatioABSTRACT：Thehydrationprocess,hydrationproductandhydrationheatofblendedcementpastemixedwithmineraladmixtureandexpansiveagentatLow/BratioarestudiedByrd,Thermosanalysis,andcalorimetryinstrument,andtheywerecomparedwiththosei
2、mpurecementpaste.TheresultsshowthatpurecementandblendedcementatLow/Bratiohavethesametypeshyperproductions,butrespectiveamountshyperrationalproductsofvariousblendedcementsatsameagesAntheavariationOlatheamountofsamehydrationwithagesaredifferent;Thejointeffectliquefact
3、ionfodgel-deterringduetowaterabsorptionandtheexpansivepressureonmilleporeadriftcausedSothebycrystallogeneticistheimpetusofthevolumeexpansioncementapaste,andRothermereeffectismuchgreaterthanthelatterone.KEYWORDS:hydration; blendedcement; lowW/Bratio; expansionmechani
4、sm1IntroductionThehydrationandhardeningprocessesofordinarycementhavebeenstudiedintensively[1-3].Partlyreplacingcementwithflyash,slag,orotheractivemineraladmixturecannotcommodifythecementstrengthgrade,reducethehydrationheatofcement,butalsomelioratethestructureofharde
5、ncementpaste[4].Applyingexpansiveagentinordinaryconcretecancombinethebearingandwaterprooffunctionsofabuilding,anditcanalsoreducetheshrinkageandpreventthecrackingofconcrete[5,6].However,thehydrationprocessofcementmixedwithflyash,slagandexpansiveagentatLow/Bratiounder
6、non-saturationwaterconditionneedtobestudiedsufficiently.Soweexecutetheresearchworkinthisfield.2Elementarily2.1Rawmaterials(1)Cement:Grade42.5POcementproducedbyHuitainCementCompanyinChinawasused.(2)Flyash:GroundflyAshdownproducedbyathermoelectricityplant.(3)Slag:Grou
7、ndblastfurnaceslagwasproducedbyWuHanSteelCompanyinChinawhosespecificsurfaceis6000cm2/g.(4)Expansiveagent:(a)UEAexpansiveagentwasmanufacturedbyZhengzhouCompany,ThechemicalcompositionsofrawmaterialsareshowninTable1.(b)Twokindsofexpansivegrandparentalpreparedbyourselve
8、s;ThemaincomponentsexpansiveagentarrawaluniteandCaSO4·2H2Oandthoseexpansiveagentincludeautunite,clinkerandsulphonatecementCaSO4·2H2O.2.2Me
