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1、西南交通大學(xué)研究生學(xué)位論文再生混凝土研究及再生混凝土柱力學(xué)性能分析焦姓級名二oo五級張軍申請學(xué)位級別工學(xué)碩士專業(yè)橋梁與隧道工程指導(dǎo)教師葉躍忠教授二oo七年六月西南交通大學(xué)碩士研究生學(xué)位論文第1I頁AbstractWiththerapiddevelopmentofthebuildingindustry,thewasteofbuildinghavebeengrowingdaybyday，andmostofthemarewasteconcrete．Besidesthechargeforallabundanceofwastedisposalisver
2、ymuch，italsoisharmtotheenvironmentandsociety．Inaddition，thelargedemandofconcreterequesttheexploitationofnaturalresources--sandandstone，andSOthenaturalresourceshasbeenontheexhaustededgefortheunceasingexploitation．Moreover,besidestheexploitationandtransponationofnaturalsandan
3、dstoneexpandslargely，italsodestroystheenvironmentbadly．TherecycledconcretebasedonenvironmentprotectionandsustainingdevelopmentCansettletheproblem．Thispaperfirststudiesthephysicalpropertiesofrecycledconcreteandnatureconcrete，andtheaxialcompressionoftherecycledconcretecolumns
4、andthenatureconcretecolumnsiS￡liscussed．Onthephysicalproperties，thepaperstudiesparticlesizedistribution，apparentdensity,voidfraction，waterabsorptionandcrushingvalueoftherecycledaggregate，andcomparesthemwimthatofthenaturalaggregate．a(chǎn)ndanalysesthereasonscausingdifferencesbetw
5、eenthetwokindsofaggregate．Allexperimentstakeorthogonalexperimentdesignandeachconcretemixtureratioconsidersthreeinfluencesfactors，includingtherecycledcoarseaggregate，F(xiàn)DNandflyash．Thenweanalysesthatthethreefactorshaveaneffectontheworkabilityandmechanicalpropertiesofrecycledco
6、ncrete．Onthestructure，theaxialcompressionoftherecycledconcretecolumnsisexperimentallyinvestigated,thefailuremodesandloadingcapacityofthemaremainlydiscussedandcomparedwiththenatureconcretecolumns．Intheduring,thestrainofthecolumninsideandoutsideisbemeasuredandthedifferenceoft
7、hemisanalyzed．Inthelastofthepaper，thedifferenceoftherecycledconcreteandthenatureconcr吐eisanalyzedinthemicrostructureandwecomparetherecycledconcretewiththenatureconcreteintheeconomyandenvironment．Inconclusion，itisfeasiblethattherecycledconcreteisappliedinthestructure．K卵燃呶Rec
8、ycledconcrete；Column；Physicalproperties；Axialcompression；Microstructureanalyses西南交
