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1、密级公开分类号TU502工程硕士学位论文大流态碎砖骨料混凝土配制方法及性能试验研究邬良竹指导教师孟宏睿副教授田鹏刚教授级高级工程师申请学位级别工程硕士工程领域建筑与土木工程2018年5月11日学位论文知识产权声明79学位论文知识产权声明80度和轴心抗压强度的影响；（3）采用正交试验法研究了碎砖骨料替代率、聚丙烯纤维掺量、矿粉替代率和硅灰掺量对大流态碎砖骨料混凝土工作性能、立方体抗压强度和劈裂强度的影响；分析了不同因素水平对混凝土立方体抗压强度和劈裂强度的影响，通过极差分析和方差分析确定出了在试验范围内的最优配合比；（4）对大流
2、态碎砖骨料混凝土标准养护28d的立方体试件进行了超声值和回弹值的测定，结合实测的大流态碎砖骨料混凝土立方体抗压强度值，采用回归分析的方法，建立了适用于本试验范围内的大流态碎砖骨料混凝土测强方程。关键词：碎砖骨料；强化预处理；配制方法；力学性能；无损检测fluiditybrickbatsaggregateconcreteisexplored.Themaincontentsofthispaperareasfollows:(1)Mechanicalcrushing,screening,washinganddryingofbrickb
3、atsaggregate,andfortifiedpretreatmentindifferentways,testtheapparentdensity,waterabsorptionrateandcrushingindexofbrickbatsaggregate,analyzetheeffectofdifferentpretreatmentmethodsontheapparentdensity,waterabsorptionandcrushingindexofbrickbatsaggregate;(2)Useuntreated
4、brickbatsaggregateandpretreatmentbrickbatsaggregatetoreplacesomeorallnaturalgravelaggregatetopreparehighfluiditybrickbatsaggregateconcreteandcalculatetheinitialmixratio;analyzetheinfluenceofuntreatedbrickbatsaggregateandpretreatedbrickbatsaggregateontheperformance,2
5、8dcompressivestrength,splittingtensilestrengthandaxialcompressivestrengthofhighfluiditybrickbatsaggregateconcretemixture;(3)Theorthogonaltestisusedtostudytheinfluenceofthereplacementrateofaggregate,thecontentofpolypropylenefiber,thereplacementrateofmineralpowderandt
6、hecontentofsilicafumeontheworkingperformanceandmechanicalpropertiesonthehighfluiditybrickbatsaggregateconcrete.Theinfluenceofdifferentfactorsonthecompressivestrengthofconcreteisanalyzed.Thebestmixtureratioisdeterminedthroughtherangeanalysisandanalysisofvarianceinthe
7、experimentalrange;(4)Measuretheultrasonicandthereboundvalueofhighfluiditybrickbatsaggregateconcrete,combinedwiththecompressivestrengthvalue,usingregressionanalysismethod,establishthemeasuringequation.KeyWords:Brickbatsaggregate,Strengthenpretreatment,Preparationmeth
8、od,Mechanicalproperties,Non-destructivetesting目录1绪论·······················································································
