16282023·8·BuildingConstruction------BUILDINGMATERIAL材建料筑不同矿物掺合料掺量的调整对浆体工作性能影响的研究唐晓蒙上海建工建材科技集团股份有限公司上海200086摘要：针对自密实混凝土在大流动度下易离析、泌水现象展开研究，通过改变矿粉、粉煤灰、硅灰和微珠的复掺比例，研究不同矿物掺合料掺量的调整对浆体工作性能影响。进行正交试验，研究各种掺合料对水泥浆体黏度和稠度的影响趋势，确定各种掺合料掺入的比例，通过进行种类或比例的动态调整，复配出针对浆体黏度和稠度不同要求的复合掺合料最佳配比，实现复合掺合料与功能性外加剂、胶凝材料体系的协同耦合作用，保证混凝土高流动性、良好的间隙通过能力及适宜的黏聚性。关键词：自密实混凝土；配合比优化；复合掺合料；硅灰；微珠中图分类号：TU52文献标志码：A文章编号：1004-1001(2023)08-1628-03DOl:10.14144/j.cnki.jzsg.2023.08.038StudyonEffectofAdjustingDosageofDifferentMineralAdditivesonWorkingPerformanceofSlurryTANGXiaomengShanghaiConstructionBuildingMaterialsTechnologyGroupCo.,Ltd.,Shanghai200086,ChinaAbstract:Astudyisconductedonthephenomenonofsegregationandbleedingofself-compactingconcreteunderhighfluidity.Bychangingthecompositeratioofmineralpowder,flyash,silicafume,andcenosphere,theeffectofadjustingtheamountofdifferentmineraladditivesontheworkingperformanceoftheslurryisstudied.Theorthogonalexperimentsareconductedtostudytheinfluencetrendofvariousadditivesontheviscosityandconsistencyofconcreteslurry,determinetheproportionofvariousadditivesadded,anddynamicallyadjustthetypeorproportiontocompoundtheoptimalratioofcompositeadmixturesfordifferentrequirementsofslurryviscosityandconsistency.Itachievesthesynergisticcouplingeffectofcompositeadmixtureswithfunctionaladmixturesandcementitiousmaterialsystems,andensurestheconcretewithhighfluidity,goodclearancepassingabilityandsuitableadhesion.Keywords:self-compactingconcrete;mixratiooptimization;compositeadditive;silicaash;cenosphere随着国内外学者对自密实混凝土的不懈研究，我国在高层建筑、桥梁、隧道、轨道等施工难度大、钢筋密集、薄壁、复杂形体的施工部位大量应用自密实混凝土，为我国带来了良好的社会效益、生态效益和经济效...
