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1、外文资料翻译TheHydrationofBlendedCementatLowW/BRatioABSTRACT：Thehydrationprocess,hydrationproductandhydrationheatofblendedcementpastemixedwithmineraladmixtureandexpansiveagentatLow/BratioarestudiedByrd,Thermosanalysis,andcalorimetryinstrument,andtheywerecomparedwiththose
2、impurecementpaste.TheresultsshowthatpurecementandblendedcementatLow/Bratiohavethesametypeshyperproductions,butrespectiveamountshyperrationalproductsofvariousblendedcementsatsameagesAntheavariationOlatheamountofsamehydrationwithagesaredifferent;Thejointeffectliquefa
3、ctionfodgel-deterringduetowaterabsorptionandtheexpansivepressureonmilleporeadriftcausedSothebycrystallogeneticistheimpetusofthevolumeexpansioncementapaste,andRothermereeffectismuchgreaterthanthelatterone.KEYWORDS:hydration; blendedcement; lowW/Bratio; expansionmech
4、anism1IntroductionThehydrationandhardeningprocessesofordinarycementhavebeenstudiedintensively[1-3].Partlyreplacingcementwithflyash,slag,orotheractivemineraladmixturecannotcommodifythecementstrengthgrade,reducethehydrationheatofcement,butalsomelioratethestructureofh
5、ardencementpaste[4].Applyingexpansiveagentinordinaryconcretecancombinethebearingandwaterprooffunctionsofabuilding,anditcanalsoreducetheshrinkageandpreventthecrackingofconcrete[5,6].However,thehydrationprocessofcementmixedwithflyash,slagandexpansiveagentatLow/Bratio
6、undernon-saturationwaterconditionneedtobestudiedsufficiently.Soweexecutetheresearchworkinthisfield.2Elementarily2.1Rawmaterials(1)Cement:Grade42.5POcementproducedbyHuitainCementCompanyinChinawasused.(2)Flyash:GroundflyAshdownproducedbyathermoelectricityplant.(3)Sla
7、g:GroundblastfurnaceslagwasproducedbyWuHanSteelCompanyinChinawhosespecificsurfaceis6000cm2/g.(4)Expansiveagent:(a)UEAexpansiveagentwasmanufacturedbyZhengzhouCompany,ThechemicalcompositionsofrawmaterialsareshowninTable1.(b)Twokindsofexpansivegrandparentalpreparedbyo
8、urselves;ThemaincomponentsexpansiveagentarrawaluniteandCaSO4·2H2Oandthoseexpansiveagentincludeautunite,clinkerandsulphonatecementCaSO4·2H2O.2.2Me
