用交流阻抗法研究碳纤维混凝土导电性  

Study on the Electrical Conductivity of Carbon Fiber Reinforced Concret by A.C.Impedance Spectroscopy

作　　者：陈兵[1] 姚武[1] 吴科如[1] 

机构地区：[1]同济大学混凝土材料研究国家重点实验室,上海200092

出　　处：《材料科学与工程》2001年第1期76-79,共4页Materials Science and Engineering

基　　金：国家自然科学基金!资助项目 (5 990 80 0 7)

摘　　要：随着水泥基材料的发展 ,人们对水泥基材料提出的更新的要求 ,其中水泥基导电复合材料的研究引起了广泛的兴趣。制备水泥基导电复合材料的方法是在水泥基材料中掺入各种导电组分 ,目前较常用的是掺入碳纤维 ,它不仅可以大幅度提高水泥基复合材料的电导率 ,还能够改善水泥基材料的力学性能、增加其韧性。本研究主要通过对碳纤维混凝土的交流阻抗谱进行分析 ,研究其导电性能与内部微结构的关系。The new request for cement based composite was put forward with the development of cementitious materials, in which more researches are made on electrical conductivity of cement based materials. The way of making electric cementitious materials is to add electric element. The common element used is carbon fiber, which can not only increase the conductivity of the specimens by several orders of magnitude but also ehnance the mechanical properties of speciments, especial ductility. In this paper, the A.C. impedance spectroscopy of carbon fiber reinforced cement composite are measured and the relationship between microstructure and the electrical conductivity are studied. The results provide an important guide for the manufacture of conductive and intrinsically smart carbon fiber reinforced composites.

关 键 词：碳纤维 交流阻抗 电导率 混凝土 建筑材料 水泥基复合材料 

分 类 号：TU528.58[建筑科学—建筑技术科学]