水泥混凝土抗硫酸盐侵蚀试验方法研究

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1、西南交通大学硕士学位论文水泥混凝土抗硫酸盐侵蚀试验方法研究姓名：吴长发申请学位级别：硕士专业：桥梁与隧道工程指导教师：叶跃忠20070601西南交通大学硕士研究生学位论文第1I页AbstractThesulfateattackIS也emostextensiveandeonlInOnformmtheconcretechemicalcorrosion,andithasbeenanimportantpartofstructuredurabilityresearch．Althoughsofartherearcma

2、nysulfateattacktestmethodsthathadbeenproposed,eachmethodhassomelimitationsandnotanymethodCanrevealconcretesulfateattackmechanismqmcMyandtruthfully,especiallyisusedtoforec弱tvariouscapabilityofconcretethatisinthesulfateattackenvironmentforlongterm．Therefore

3、，itisveryimportanttomvestigatetestmethodofresistancetosulfateattacksystematically．Nowthenationalstandardtestmethodsaremainlyusedtoevaluatecapabilityofresistancetosulfateattackofcementgelmaterial．Resistancetosulfateattackofconcreterelatestonotonlycementgel

4、materialbutalsoitscompactness．Thus，differentresearchersintheresistancetosulfateattackstudy,accordingtodifferentresearchpurposes，adoptdifferenttestmethods．InthisPaper,objectofstudyisconcTctecontainingflyashandpreservatives．Discusstestmethodsandevaluationpa

5、rameterofresistancetosulfateattackofcementmortarandconcretewhichincludetestmethodsofnationalstandardsandsumeofthescientificresearchinstitutes．Testparametersofthevariousmethodsaremodifiedinordertoobtainactuallymorefeasibleexperimentalparameterandcorrelativ

6、eevaluationparameter．Atthesametime．microscopicmechanismof酿lmethodsisanalysedbyusingthescanningelectronmicroscopetechnologyfrommicrocosmicpointofview．GB＼T2420一81andGB＼T749_-200lareaboutresistancetosulfateattackofcementmortar．Mainstudycontentsofcementmortar

7、areresistancetosulfateattackofflyashandpreservatives，sizechangesofsandparticle，pressurechangesofmanufactureandevaluationparameteraboutcorrosionresistancecoefficientandbulgeratio．Resistancetosulfateattacktestmethodsofconcreteadoptdrying-wettingcyclesandlon

8、g-termimmersion．Mainstudycontentsofconcretearesensitivityofcubeandprism,influenceofsolutiontemperatureandconcentrationonresistanceto西南交通大学硕士研究生学位论文第lll页sulfateattack，resistancetosulfateattackcapabilityofdifferentint