网状PP纤维对水泥基材料性能的影响  

Influence of Network PP Fiber on the Properties of Cement Based Materials

作　　者：肖力光[1] 王思宇[1] 张丽晶 徐海岩 胡洪亮[3] 

机构地区：[1]吉林建筑工程学院材料科学与工程学院,长春130021 [2]长春星宇集团,长春130021 [3]吉林建筑工程学院材料学院

出　　处：《吉林建筑工程学院学报》2007年第3期1-6,共6页Journal of Jilin Architectural and Civil Engineering

基　　金：上海市科委专向基金计划项目(06dz05804);国家科技支撑项目

摘　　要：在工程实践中,混凝土(砂浆)的裂缝问题越来越突出,采用聚丙烯纤维来解决混凝土开裂的问题是近年来广泛研究和应用的一种新的途径.其原理主要在于,混凝土中水泥作为胶凝材料来握裹纤维,这些纤维起到微细配筋作用,消耗混凝土变形开裂能量、提高韧性、撑托骨料和减少混凝土离析泌水,从而控制水泥基体内部微细裂的生成和扩展,提高混凝土的抗裂性能.笔者对纤维混凝土(砂浆)的性能进行了综合分析,得出了纤维混凝土(砂浆)在物理力学性能上的优势.In recent years, the crack problem of the concrete is more and more outstanding in the engineering practice, that adopting the polypropylene fiber to be the tunnel concrete lining and resolving the problem of the concrete appearing crack is extensively studies and a kind of new path for applications in recent years. Its principle mainly lies in：the cement in the concrete is gelatinized material felt the fibers, these fiber similar to very small distributed reinforcing steel bar in function, consuming the energy of the concrete cracking, raising the concrete toughness, reducing the concrete segregation and bleeding, thus they control the expansion of the internal microscopic cracks of the cement, and raise the concrete crack resistance, The paper analyzes synthetically the performance of the fiber concrete.

关 键 词：聚丙烯纤维混凝土(砂浆) 力学性能 混凝土(砂浆)抗裂性 

分 类 号：TU5[建筑科学—建筑技术科学]