研究了碳纤维水泥基复合材料在轴向压力下的机敏性 ,并对用于监测材料内部损伤的电阻测试法进行了探讨 .结果表明 ,这种复合材料的导电性有较显著的压力依赖性 ,在较低压力范围内电阻随压力增加而降低 ,在较高压力下随压力增大而升高 .通过对循环荷载下试件的声发射监测 ,可以认为这种电阻压力依赖性与导电网络在应力作用下的形成、重组和破坏有关 .通过电阻变化峰值的测试可以对材料内部损伤进行实时监控 The sensitivity of carbon fiber cement-based composites under axial pressure was studied and the resistance test method for monitoring the internal damage of the materials was discussed.The results show that the conductivity of the composites has significant pressure dependence, In the lower pressure range, the resistance decreases with increasing pressure, and increases with increasing pressure under higher pressure.Using acoustic emission monitoring of the specimen under cyclic loading, it can be considered that the dependence of this resistance pressure on the conductivity of The formation, reorganization and destruction under the action of stress can be monitored in real time by the test of peak change in resistance