混凝土鹽結(jié)晶侵蝕機(jī)理與評價(jià)方法.pdf

1、中南大學(xué)博士學(xué)位論文混凝土鹽結(jié)晶侵蝕機(jī)理與評價(jià)方法姓名：馬昆林申請學(xué)位級別：博士專業(yè)：道路與鐵道工程指導(dǎo)教師：謝友均20090301ABSTRACTSaItsolutionattackonconcreteisoneofthemainreasonsforconcretedeteriorationwhichhasbeenfocusedalongbyresearchersovertheworldBasedonthetheoreticalana

2、lysisbyphysicalchemistrythermodynamlcsandcrvstallizationscienceandthemacro／microscopetestingthephyslcalcrystallizationattackofambientsaltsolutiononconcretewasstudledsvstematicallyinpresentpapeLinvolvingtheinvestigationof

3、transPortatlonprocessandcrystallizationprocessofsaltsolutioninconcreteaswelIasthecollrespondingmechanismsofsaltcrystallizationattackonconcreteFunhemore，anewexperimentalmethodwasdevelopedtoevaluatetheresiStanceofconcretet

4、ocrystallizationattackThemainachievementsandcontributionobtainedinthethesisareasfollows：1Accordingtotheinvestigationofrepresentativeenvironmentmpracticeandexperimentalresults，thedeteriorationcharacteristicsotconc代teseⅣed

5、indifferentsaltsolutionenvironmentconditionsweresummarizedItwasfoundedthatthecapillarysiphoneffect，windward_sideeffectanddrywetcircleeffectwerethethreemainreasonsresultedincrystalllzatlonattackofconcreteundersaltsolution

6、2Basedonthelaboratorysimulationexperimentbydry’wetcyclesandpartialimmersionmethod，evolutionofmechanicalpropertiesandthemicrostructureofconcretewereobtained，andthecorrespondingmechanismwasexpounded3Transportationprocessof

7、saltsolutioninconcremdrivenbycapllIa巧siphoneffectanddiffusioneffectwasanalyzedAndthusthetransportatlonmodelofsaltsolutionbaseduponcapillaryeffectinconcretewasproposed，aswellaSthetransportationkineticsequationofsaltsoluti