水泥泌水性能及其調控技術研究.pdf

1、武漢理工大學碩士學位論文水泥泌水性能及其調控技術研究姓名：程彬申請學位級別：碩士專業(yè)：材料學指導教師：龍世宗20090501AbstractThebleedingofnewlycastconcretehasbeenadifficultyforalongtimebecausebleedingisaffectedbyagreatmanyoffactorsMacroscopically，concreteiswell—proportioneda

2、fterbleeding，butbleedingcanresultinsurfacepeelingandlocaluneveninsideconcrete，whichaffectthestrengthanddurabilityActually，basicpropertiesofconcretearedeterminedbyjellocementstoneformedinthehydratedcementThepropertiesofce

3、mentstoneareuptonumberandstructureofholewhenthecementishydratedandbleedingThusitisofgreatimportancetostudycementbleedingandcontrollingtechnologyInthispaper，thestudyiscarriedoutbyfreshcementmortartodiscussthefactorsthataf

4、fectthepropertiesofbleedingTheexperimentadoptthewaterretainingrateofcementtoshowtheproperties(waterretainingandbleedingaretheoppositeaspectofonething)First，theresearchofbleedingistheeffectofcementcomponentsAccordingtothe

5、testofnormalconsistency，fluiditywaterretainingrate，meresultshowsthatthefinenessofcementcomponentsisthekeytothepropertiesofbleedingthebiggerthecementspecificsurfaceareathemorewaterretainingratethelessquantityofbleedingsim

6、ilarly，thepropertiesofwaterretainingaredifferentwhenmixingthecementwiththenyashortheslagortheboilingslagrespectively，thecementwithmenyashisthebetteroption，andthecementwiththeslagisthelastchoiceitalsoindicatesthemorequant

7、ityoftheslag，themorequantityofbleedingwecangotmeresultsbytheorthogonalexperimentswiththecompositecementthatthemaximumwaterretainingfactorcombinationisA3B1C3，whiletheminimumfactorcombinationiSA181C1Inordertoimprovetheprop

8、ertyofcementbleeding，thecontrollingtechnologyisstudiedonmortartheresearchonmortarbleedingbymixingitwithasmall鋤ountofbentonite(3differenttypes)andlimestonepowderrespectivelyshowsthatthecementwithbentonite(3differenttypes)

9、atthecontentof07％Canbothimprovethepropertiesofbleedingandthestrengthofthecementmortar；andthecementwithcalciumtypebentoniteatthecontentof07％thepercentageofwaterretamlngraterise37％theflexuralstrengthof3dand28dgrowsby107％，c