1、武漢理工大學(xué)碩士學(xué)位論文干燥大溫差氣候下混凝土含水量測定與顯微結(jié)構(gòu)的研究姓名：佘安明申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：水中和20070501AbstractConcretehasbeenwidelyusedintheconstructionofinfrastructuresThepreparationanduseofconcretearealwaysinspecialenviromnents，someofwhichareharsh

2、，forexample，dryclimate，bigtemperaturechangeandcorrosivesubstancesetcThesebadconditionsnotonlybringsomedifficultiestothepreparationofconcreteandqualitycontrol，butariseseriousdamagestotheconcretestructuresTheproblemscaused

3、bythebadconditionswillbeharmfultothedurabilityandreducetheservicelifeofthestructure，whichwillresultingreatrepairexpenseThisthesisfocusesontheeffectofregionalclimate，whichisdryandbigtemperaturechange，onthepropertiesofconc

4、reteThetechniqueofwatercontentcontrollingwhenpreparingconcreteandtheinfluenceoftheregionenvironmentonthemicrostructureconcreteatearlyagesarestudiedInthisthesis，aspecialequipmentthewatercontentcheckerinfreshconcrete(WChec

5、ker)wasused；themicro，hadnesstestingmachineandscanningelectronmicroscopic(SEM)wereusedtoanalyzetheinterfacialtransitionzone(ITZ)ofconcrete；themercuryintrusionporosimeter(MIP)andopticsmicroscopewereusedtoinvestigatetheporo

6、sityandporesizedistributionofconcreteThefeasibilityofapplyinganewwatercontenttesttechniqueinfreshconcreteisstudiedCharacteristicsandformationmechanismofthemicrostructureinthedryandbigtemperaturechangeenvironmentisinvesti

7、gatedAccordingtotheresearchresults，followingconclusionsareobtained：1TheWCheckercantestthewatercontentoffreshconcreteviatestingitsaircontentandbulkdensityquicklyandpreciselyByusingthistechnique，itispossibletomonitorthewat

8、ercontent，adjusttheconcretemixproportionandcontroltheconcretequalityintheconstructionsite2Inthedryandbigtemperaturechangeenvironment，thewidthofITZbecomeswiderandthemeanvaluesofthelowestmicro—hardnessdecreasedobviouslytha