高地溫環(huán)境對(duì)隧道襯砌混凝土性能影響研究.pdf

1、西南交通大學(xué)碩士學(xué)位論文高地溫環(huán)境對(duì)隧道襯砌混凝土性能影響研究姓名：穆震申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：葉躍忠201111西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)AbstractTllisthesistopicresearchesthehazardeonlaollingandpivotalbuildingtechniquesofextralongtunnelwhichburiedunderthehighgeothermalarc

2、8AccordingtothenationaltestspecificationandoperationspecificationsimulatesconcretemaintaininginhighgeothermalenvironmentThemainpurposeofthispaperistoinvestigate4aspectswhichinfluencedbyhighgeothermalenvironmenttheyinclud

3、estheselectionofrawmaterialsofliningCOllCrete，theselectionofconfigurationparametersandmixdesignofliningconcrete，thebasicmechanicalpropertiesandthedurabilityofliningconcrete(1)Thispaperanalyzestheinfluenceofrawmaterialsof

4、concreteandtherequirementsoflawmaterialsunderhightemperatureenvironmentItalsoselectstherawmaterialsofliningconcreteunderhightemperatureenvironmentdesignsthemixdesignaccordingtothecoderequirementandconsiderstheperfo冊(cè)aneeo

5、ftheconcretewhichmixedforthetest(2)Itdetailedstudiesthebasicmechanicalpropertiesoftheliningconcrete謝t11thismixdesignincludingthecompressivestrengthsplittingtensilestrengthandelasticmodulusAnalysistheinfluenceoftheconcret

6、e’smechanicalpropertiesunderhi曲temperaturemaintenanceconditionInvestigationtheinfluenceeffectsofmechanicalpropertiesbymixingflyashandslagpowderstOthecorlercteTheexperimentprovedthathightemperaturemaintenancecondition咖imp

7、rovethecompressivestrengthofconcrete，butitmakesalowerstrengththannormaltemperaturecuringofthelaterstageItcanreducethisinfluencebymixingflyashandslagpowders，especiallytheflyashwillbeagoodcompensationtotheconcrete’slaterst

8、agestrengthTheconcrete’ssplittingtensilestrengthandelasticmodulusunderhightemperaturemaintenancehaveasimilarinfluencetothecompressivestrengthofconcreteunderhightemperaturemaintenancebutthereim’tanycompensationeffectsbefo

9、undaftermixingflyashandslagpowders，insteadS01TIt：still啪producenegativeeffects(3)Researchingconcretedurability、ⅣithJJF(m議ed、Ⅳi也waterre：clucerand20％flyash)Throughexperimentinvestigatestheconcrete’sresistantabilityofsulfate

10、erosionandcarbonationunderhightemperaturemaintenanceconditionandnormaltemperaturemaintenanceconditionThetestdatashowthattheconcretewhichunderhightomperaturemaintenancehasmoleresistantsulfateerosionabilitythanthoseunderno

11、rmaltemperaturemaintenance(30times，60timescycle)；Hightemperaturemaintenanceacceleratestheconcretecarbonation，ithasalladverseeffecttoresistantcarbonizationability(4)Throughthestudyofmechanism，analysistheeffectsIeIISOII$、)