地鐵免蒸養(yǎng)盾構(gòu)隧道管片混凝土的設(shè)計(jì)與制備及其工程應(yīng)用.pdf

1、武漢理工大學(xué)碩士學(xué)位論文地鐵免蒸養(yǎng)盾構(gòu)隧道管片混凝土的設(shè)計(jì)與制備及其工程應(yīng)用姓名：陳凱申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：丁慶軍20100501武漢理工大學(xué)碩士學(xué)位論文AbstractDuctpieceistheimportantpartofshieldtunnelInordertoimproveproducingefficiencyatmostfactoriesof0111“countrysteam—curingmethodisa

2、doptedtoenhancedemoldingstrengthattheearlystageHoweverduringenhancingconcretesearlystrengththesteamcuringalsogivetheshieldsegmentconcretesthevolumestabilityandthelastingqualitytheadverseeffect，whilesteamcuringconsumedene

3、rgygreatlyIn20yearsthesubwaytunnelkeepsthesustainedgrowthanditsshieldsegment’SformerlydemandwillbebiggerthanbeforeFromtheviewofthelongtermstrategicangleofconservingenergyandtheenvironmentalprotectionourcountryaswellasthe

4、questionsoftheshieldsegmentconcretesdurabilityimprovementandSOonitisnecessarytodevelopthehighperformanceconcretesofsteamcuringshieldsegmenttosubstitutetheoriginalsteamcuringshieldsegmentconcretes，theimprovementconcretesd

5、urabilityaswellastheenergyconsumptionquestionofshieldsegmentproductionDependingontheWuhanscienceandtechnologyresearchprojectandtheWuhansubwaytunnelingsuperbhardeningacceleratingandwaterreducingadmixturewasdevelopedandWas

6、suitabletobeinthefreesteamcuringconditionsThroughoptimizationofmixdesignthebestmixdesignofhighperformanceconcreteofductpieceWasfixedTheinfluenceofthedifferentstructureofpolycarboxylateandtheearlystrengthcomponentsonthece

7、menthydromassmobilitythecongealmenttimedifference，andtherubbergranulatedsubstanceearlystrengthwereinvestigatedUltrastrengthofpolycarboxylatesuperplasticizercompoundoptionswereidentified，Systematicresearchaboutinfluenceof

8、eachkeyfactorondimensionalstabilityanddurabilityofconcreteincludingshrinkageandcreepwhosemechanismWasalsostudiedDemoudingstrengthwas235Mpaatageof12hdiffusioncoefficientofchlorideionWas5110。13m2／sshrinkagevalueWas1810‘4at