Relationship Between Coarse/Fine Aggregate Space Coefficient and Properties of Self-compacting Concrete

作     者：LONG G C LIU Y H XIE Y J 

作者机构：School of Civil Engineering and ArchitectureCentral South UniversityChangsha 410075China Quality Intendance and Inspect Station of Construction EngineeringChenzhou 423000China 

出 版 物：《武汉理工大学学报》 (Journal of Wuhan University of Technology)

年 卷 期：2010年第32卷第17期

页      面：158-164,169页

学科分类：0810[工学-信息与通信工程] 08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：self-compacting concrete aggregate space coefficient workability compressive strength shrinkage 

摘      要：For the sake of expounding the relationship between coarse/fine aggregate volume content and properties of self-compacting concrete(SCC),a parameter of aggregate space coefficient is proposed to study systematically the effects of fine/ coarse aggregates on workability,strength and volume stability of SCC by experiments. The optimized coarse/fine aggregates volume content of SCC was discussed with regard to specified properties. Results indicate there is a close relationship between aggregate space coefficient and properties of SCC not only in fresh state but also in hardened state. With the increasing coarse/fine aggregate space coefficients,workability of fresh SCC will be improved,the compressive strength decreases slightly and shrinkage of SCC however increases. When coarse aggregate space coefficient ranges from 1.2 to 1.7 and the fine aggregate space coefficients is from 0.6 to 1.0,SCC can meet self-compactability requirements in fresh state and have a good volume stability and appropriate strength in hardened state. The results will benefits for developing a new mixing design method for SCC.