Experimental Study of Lightweight Expanded Polystyrene Aggregate Concrete Containing Silica Fume and Polypropylene Fibers

作     者：陈兵 刘睫 陈龙珠 CHEN Bing,LIU Jie ,CHEN Long-zhu (Department of Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

作者机构：Department of Civil EngineeringShanghai Jiaotong University 

出 版 物：《Journal of Shanghai Jiaotong university(Science)》 (上海交通大学学报（英文版）)

年 卷 期：2010年第15卷第2期

页      面：129-137页

核心收录：

学科分类：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] 

基　　金：the National Natural Science Foundation of China(No.50708059) 

主　　题：expanded polystyrene concrete workability compressive strength adsorption shrinkage 

摘      要：We developed a new structural lightweight concrete by totally or partially replacing coarse and fine aggregates in high performance concrete by expanded polystyrene (EPS) beads. In this work,the sizes of EPS bead were 1.0,2.5 and 6.3 mm. Lightweight EPS concretes with a wide range of concrete densities and compressive strengths were successfully developed. Compressive strength,splitting tensile strength,shrinkage,and water absorption were examined. Additionally,fine silica fume (SF) and polypropylene (PP) fibers were added to improve the mechanical and shrinkage properties of EPS concretes. The results show that fine SF greatly increases the bond strength between the EPS beads and cement paste,thus increasing the compressive strength of EPS concrete. With inclusion of PP fibers,drying shrinkage properties are significantly improved.