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:23September2008AbstractThispaperisintendedtoprovideguidanceonthefor

2、mandextenttowhichsupplementarycementingmaterials,incombinationwithPortlandcement,modifiestherateofheatevolutionduringtheearlystagesofhydrationinconcrete.Inthisinvestigation,concreteswerepreparedwithflyash,condensedsilicafumeandgroundgranulatedblastfurnaceslag,ble

3、ndedwithPortlandcementinproportionsrangingfrom5%to80%.Theseconcretesweresubjectedtoheatofhydrationtestsunderadiabaticconditionsandtheresultswereusedtoassessandquantifytheeffectsofthesupplementarycementingmaterialsinalteringtheheatrateprofilesofconcrete.Thepaperal

4、soproposesasimplifiedmathematicalformoftheheatratecurveforblendedcementbindersinconcretetoallowadesignstageassessmentofthelikelyearly-agetime–temperatureprofilesinlargeconcretestructures.Suchanassessmentwouldbeessentialinthecaseofconcretestructureswherethepotenti

5、alforthermallyinducedcrackingisofconcern.Keywords:Heatofhydration_Flyash_Silicafume_Slag_Concrete1IntroductionSupplementarycementingmaterials,suchasgroundgranulatedblastfurnaceslag(GGBS),flyash(FA)andcondensedsilicafume(CSF),arenowroutinelyusedinstructuralconcret

6、e.Usedjudiciously,thesematerialsareabletoprovideimprovementsintheeconomy,microstructureofcementpasteaswellastheengineeringpropertiesanddurabilityofconcrete.Theyalsoaltertherateofhydrationandcaninfluencethetime–temperatureprofileinlargeconcreteelements.Thispaperis

7、aimedatanimprovedunderstandingofthewayinwhichtheearly-ageheatofhydrationcharacteristicsofconcretearealteredbytheadditionofsupplementarycementingmaterials(SCM),incombinationwithPortlandcement,asapartofthebinder.Importantly,inthedesignandconstructionoflargeconcrete

8、elements,wheretheextentoftemperatureriseisofconcern,ourabilitytoreliably7宁波工程学院毕业设计（论文）--外文翻译predicttheearly-agetemperaturedifferentialsintheconcreterequiresac