外文翻译--辅助性胶凝材料对混凝土水化热的改善作用

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1、宁波工程学院毕业设计（论文）--外文翻译外文原文：TheeffectsofsupplementarycementingmaterialsinmodifyingtheheatofhydrationofconcreteYunusBallimPeterC.GrahamReceived:23February2008/Accepted:17September2008/Publishedonline:23September2008AbstractThispaperisintendedtoprovideguidanceontheformandextenttowhichsupplementary

2、cementingmaterials,incombinationwithPortlandcement,modifiestherateofheatevolutionduringtheearlystagesofhydrationinconcrete.Inthisinvestigation,concreteswerepreparedwithflyash,condensedsilicafumeandgroundgranulatedblastfurnaceslag,blendedwithPortlandcementinproportionsrangingfrom5%to80%.Thesec

3、oncretesweresubjectedtoheatofhydrationtestsunderadiabaticconditionsandtheresultswereusedtoassessandquantifytheeffectsofthesupplementarycementingmaterialsinalteringtheheatrateprofilesofconcrete.Thepaperalsoproposesasimplifiedmathematicalformoftheheatratecurveforblendedcementbindersinconcreteto

4、allowadesignstageassessmentofthelikelyearly-agetime–temperatureprofilesinlargeconcretestructures.Suchanassessmentwouldbeessentialinthecaseofconcretestructureswherethepotentialforthermallyinducedcrackingisofconcern.Keywords:Heatofhydration_Flyash_Silicafume_Slag_Concrete1IntroductionSupplement

5、arycementingmaterials,suchasgroundgranulatedblastfurnaceslag(GGBS),flyash(FA)andcondensedsilicafume(CSF),arenowroutinelyusedinstructuralconcrete.Usedjudiciously,thesematerialsareabletoprovideimprovementsintheeconomy,microstructureofcementpasteaswellastheengineeringpropertiesanddurabilityofcon

6、crete.Theyalsoaltertherateofhydrationandcaninfluencethetime–temperatureprofileinlargeconcreteelements.Thispaperisaimedatanimprovedunderstandingofthewayinwhichtheearly-ageheatofhydrationcharacteristicsofconcretearealteredbytheadditionofsupplementarycementingmaterials(SCM),incombinationwithPort

7、landcement,asapartofthebinder.Importantly,inthedesignandconstructionoflargeconcreteelements,wheretheextentoftemperatureriseisofconcern,ourabilitytoreliably7宁波工程学院毕业设计（论文）--外文翻译predicttheearly-agetemperaturedifferentialsintheconcreterequiresac