普通強度混凝土高性能化的研究.pdf

1、河海大學(xué)碩士學(xué)位論文普通強度混凝土高性能化的研究姓名：王海俠申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：方永浩劉加平20050301ThesistordegreeofMasterofScienceAbstractOrdinary—strengthconcreteisbeingwidelyusedUnderthesituationofwidespreadconcernonthedurabilityofconcrete，thehigllperf

2、ormanceoftheordinary—strengthconcreteseemstobeofgreatimportancewhichwiltbehelpfultoconservationofresources，energyandfundsTheeffectofvariousmixproportionparameters，suchasunitbindercontent，unitwatercontent，sandratio，andair

3、content，ontheperformanceofordinary—strengthconcretewereexperimentallystudied，andsuitablerangeforC40high—performanceconcreteisproposedonthisbase，thatis，unitbindercontent360400kg／m3，waterbinderratio039～047，andsandratio38％～

4、40％GradeC40highperformanceconcreteispreparedbyaddinggradeIflyash，superplaslicizerandairentrainingagentTheconcreteshaveexcellentworkabilitywithhigllslump(about200rm)andlowslumploss(1essthan40re)afterlhTheimpermeabilitygra

5、deofthehardenedconcretecanreachashighasP12Thehardenedconcretecanresistmorethan200timesoffreezing—thawingtestAccordingtoservicelifeestimatingmodelofconcretecarbonizationandfreezingmawiIlg：tl=4384(x。％)Ⅳ6andr=尼告，serace糯esti

6、mationofGradeC40concreteismadeandfreezingthawingtestTheresultsuggeststhattheestimatingservice1ifeoftheGradeC40higbperformanceconcretebasedoncarbonizationatemorethan100yearswhentheconcreteprotectinglayeristhickerthan30m，a

7、nditcallalsobeusedaroundJiangsuandZhejiangformorethan100yearsbasedonfreezing—thawingtestHighperformanceordinarystrengthconcreteisthusproposed，ThroughMIPandⅪ田methods，micro—mechanismanalysisontheC40concretesuggeststhatC40h

8、igh—performanceconcretehavelesslargepores，moretinyporesandmorereasonableporedistributionthanreferenceconcreteInthehardeningpaste，TheamountofCa(OH)2isobviouslylessthanthereferencesampleKeyWord：ordinary—strengthconcretehig