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1、外文资料翻译TheHydrationofBlendedCementatLowW/BRatioABSTRACT：Thehydrationprocess,hydrationproductandhydrationheatofblendedcementpastemixedwithmineraladmixtureandexpansiveagentatLow/BratioarestudiedByrd,Thermosanalysis,andcalorimetryinstrument,andtheywerecomparedwiththoseimpurecementpa
2、ste.TheresultsshowthatpurecementandblendedcementatLow/Bratiohavethesametypeshyperproductions,butrespectiveamountshyperrationalproductsofvariousblendedcementsatsameagesAntheavariationOlatheamountofsamehydrationwithagesaredifferent;Thejointeffectliquefactionfodgel-deterringduetowa
3、terabsorptionandtheexpansivepressureonmilleporeadriftcausedSothebycrystallogeneticistheimpetusofthevolumeexpansioncementapaste,andRothermereeffectismuchgreaterthanthelatterone.KEYWORDS:hydration; blendedcement; lowW/Bratio; expansionmechanism1IntroductionThehydrationandhardening
4、processesofordinarycementhavebeenstudiedintensively[1-3].Partlyreplacingcementwithflyash,slag,orotheractivemineraladmixturecannotcommodifythecementstrengthgrade,reducethehydrationheatofcement,butalsomelioratethestructureofhardencementpaste[4].Applyingexpansiveagentinordinaryconc
5、retecancombinethebearingandwaterprooffunctionsofabuilding,anditcanalsoreducetheshrinkageandpreventthecrackingofconcrete[5,6].However,thehydrationprocessofcementmixedwithflyash,slagandexpansiveagentatLow/Bratioundernon-saturationwaterconditionneedtobestudiedsufficiently.Soweexecu
6、tetheresearchworkinthisfield.2Elementarily2.1Rawmaterials(1)Cement:Grade42.5POcementproducedbyHuitainCementCompanyinChinawasused.(2)Flyash:GroundflyAshdownproducedbyathermoelectricityplant.(3)Slag:GroundblastfurnaceslagwasproducedbyWuHanSteelCompanyinChinawhosespecificsurfaceis6
7、000cm2/g.(4)Expansiveagent:(a)UEAexpansiveagentwasmanufacturedbyZhengzhouCompany,ThechemicalcompositionsofrawmaterialsareshowninTable1.(b)Twokindsofexpansivegrandparentalpreparedbyourselves;ThemaincomponentsexpansiveagentarrawaluniteandCaSO4·2H2Oandthoseexpansiveagentincludeautu
8、nite,clinkerandsulphonatecementCaSO4·2H2O.2.2Me
