【作者】 叶燕华； 李雪红； 缪汉良； 陈丽华；

【Author】 YE Yanhua~1 LI Xuehong~2 MIAO Hanliang~3 CHEN Lihua~4 (1.College of Civil Engineering,Nanjing University of Technology,Nanjing,210009)

【机构】 南京工业大学土木学院；

【摘要】 <正>一、引言自密实混凝土(SCC)能获得很好的应用前景主要是：自密实混凝土具有高流动性,高填充性,无需振捣而具有高密实度,能在环境艰难的施工条件下完成新拌混凝土的浇注, 表现出混凝土高性能特性。由于自密实混凝土配合比设计中添加了多于一种以上的矿物掺合料和化学添加剂,使自密实混凝土的特性相对复杂。了解自密实混凝土拌合物中各种成更多还原

【Abstract】 The Self-Compacting Concrete(SCC)possesses good working performance including higher fluidity,lower noises,and self consolidating.It is prone to protect environment and sustain develop for civil engineering.Based on adding superplastisizer(SP)and viscosity modified agent (VMA)into concrete mixture and improving fluidity and segregation,two experiments with both lower water-to-binder ratio and different dosage of SP and VMA were carried out.The test results indicated that adding superplastisizer will debase viscosity and increase fluidity.It also implied that addition of VMA substantially decreases segregation.An increase of the total aggregate-to-binder ratio will affect both the segregation and fluidity.更多还原