三维编织钢纤维增强渍浆混凝土的受压力学性能  

Compression Mechanical Behavior of 3-D Braided Steel Fiber Reinforced Concrete

作　　者：季斌[1] 麻海燕[1] 余红发[1] 程宇[1] 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016

出　　处：《南京航空航天大学学报》2009年第5期688-692,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家重点基础研究发展计划("九七三"计划)(2009CB623203)资助项目;中国博士后基金(20070421036)资助项目;2008年江苏省"六大人才高峰"高层次人才项目

摘　　要：三维编织钢纤维增强渍浆混凝土(3-D braided steel fiber reinforced concrete,3-D-BSFC)是用新工艺研制出的一种纤维三维定向增强混凝土。本文设计优选了3-D-BSFC材料的原材料与配合比,成功制备出不同纤维不同体积含量的3-D-BSFC试件,研究了其受压力学特性及钢纤维体积率和纤维类型的影响规律。结果表明,三维编织钢纤维能显著提高基体混凝土的强度及韧性,分别提高3倍和2倍以上,同时改善了其变形能力;BSFC的破坏表现出明显的延性破坏特征,最大纵向压缩量可达20%左右。A new kind of fiber reinforced concrete, called the 3-D braided steel fiber reinforced concrete （3-D-BSFC） is developed. The steel fibers are orthogonally distributed. The raw materials and the mix proportions are designed and optimized, and specimens of 3-D-BSFC with different fiber contents and different fiber types are prepared. Compressive properties of the specimens are investigated. Results show that the strength and toughness of 3-D-BSFC are significantly increased, which are increased to more than 3 times and 2 times respectively and the ability of deformation is also improved. The failure of BSFC exhibits characteristics of the ductile mode and the longitudinal deformation of compression may reach about 20%.

关 键 词：三维编织钢纤维增强渍浆混凝土 抗压强度 应力-应变曲线 压缩韧性 

分 类 号：TU528[建筑科学—建筑技术科学]