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ID:34223501
大小:7.12 MB
页数:72页
时间:2019-03-04
《微硅粉制备绿色混凝土及其关键技术研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、武汉理T--,4:学硕一j:学i适沧立AbstractWith萼gradualdepletionoftraditionalmineralresourcesandincreasinglydegradationofenvironment,modernsocietyadvocatesdevelopingcirculareconomy.Itiswaytoachieveenergyconservationandemissionsreduction,economicdevelopmentandenviron
2、mentalprotectionawin—winsituation,tomakeeconomicbenefit,socialbenefitandecologicalbenefitunitary.Inalongperiodoftime,silicafumeandstrawasharenotreasonablyprocessedandapplied,theyarejustpileduporlandfilltreated,notonlywastetheresourcesbutalsocauseenvi
3、ronmentalpollution.Silicafumewascollectedfromferrosiliconfurnacefluegas,itsparticleswereextremelysmall,andhadbeenexperiencedaprocessofhightemperaturetolowtemperature,SOtheSi02hadveryhighlypotentialactivity.Basedonextensiveinvestigationanddatafromhome
4、andabroad,thephysicalandchemicalpropertiesofsilicafumewouldbediscussedandtheapplicationinconcreteasmineraladmixturewouldbecarriedout.ThemicrocosmicphysicalandchemicalpropertieswouldberesearchedbyX.rayfluorescenceanalysis,XRD,SEM,BETnitrogenadsorption
5、test.Throughtestingtheperformanceoffreshconcreteandmechanicalpropertiesofconcrete,theinfluenceofsilicafumetoconcretewouldbediscussed,andthesystematiccontrastofsilicafumeto$95GGBSandIFAwouldbestudied.ExperimentadoptedamixedmethodofsilicafumewithGGBSto
6、makehighstrengthllighperformanceconcrete,toprovidedareferencebasisfortheengineering.Becauseexperiencedaburningprocessofhightemperaturetolowtemperature,strawashcontainedaconsiderableamountofpotentialactiveSi02,itWasusedinconcreteasamineraladmixture,th
7、eperformanceoffleshconcreteandmechanicalpropertiesofconcretewouldbealsostudied.Andthefeasibilityofstrawashcompositedwithsilicafumetomakhigh.performanceconcretewouldbediscussed.ResearchshowedthattheamorphousSi02ofsilicafumereached91.51%,theparticledia
8、meterwas0.1.0.21xmandeasyreunited,theinternalstructureofsilicafumewaslooseandporous.ItsBETisothermalcurvewasIVtype,hysteresisloopwasH1type,SOsilicafumehadtubularmesoporousstructurewhichbothendswereopening,BETspecificsurfaceareawas36.52m2/g,BJHaverage
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