【摘要】 研究了水泥中分别加入碳纤维和镀膜碳纤维所制成的导电复合材料在不同载荷下的导电性能 ,探索其用于智能水泥的可能性 .经过对含有不同短切长度和含量的碳纤维、镀膜碳纤维导电水泥试样进行测试和分析后发现 :碳纤维和镀膜碳纤维加入到水泥中制成的试样 ,其电阻随着压力和剪切载荷的变化呈现规律性的变化 ,其中镀膜碳纤维试样比碳纤维试样表现得更为敏感 ,并且都反映了试样受到压力后其内部裂纹的闭合和扩展情况 ,利用这种特性 ,使其有可能作为一种智能材料更多还原

【Abstract】 The electric conductivity of cement specimens with imbedded carbon fibers with or without metallic coating was studied under different pressures, and the possibility of such specimens being used as intelligenet cement was explored. Cement specimens containing carbon fibers and metal coated carbon fibers of different composition and length were made, tested and analyzed. The resistance of specimens was found to change regularly when subjected pressure. In particular, specimens with coated carbon fibers were found to be more sensitive than those with plain carbon fibers. This showed the effect of closure and opening of original cracks. With these characteristics, cement similarly imbedded is expected to be suitable for use as a kind of intelligent material.更多还原