嵌入式碳纤维石墨水泥基复合材料的压阻特性

Piezoresistivity of Carbon Fiber Graphite Cement-Based Composites Embedded in Concrete Column

将碳纤维石墨水泥基复合材料(CFGCC)试块(40 mm×40 mm×40 mm)预埋入混凝土柱(100 mm×100 mm×300 mm)中,利用四电极法研究了CFGCC试块在混凝土柱受到不同幅值循环荷载作用下的电阻性能.结果表明:CFGCC试块电阻变化率与混凝土柱压应力呈现良好的对应关系,因此,CFGCC有望成为混凝土结构长期健康监测的新一代传感材料.

The resistivity of carbon fiber graphite cement-based composites（CFGCC） block（40 mm×40 mm×40 mm） embedded in concrete column（100 mm×100 mm×300 mm） which was subject to different amplitudes of cyclic loading was studied by using four-electrode method.The results show that there is good corresponding relationship between the resistance change rate of CFGCC block and the compressive stress of the concrete column.Therefore,CFGCC has great potential to be used as a new material for long time health monitors of concrete structures.