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水泥基碳纤维复合材料压敏性的研究

, PP. 8-11

Keywords: 碳纤维,水泥,压敏性

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Abstract:

研究了在不同压力下掺有碳纤维的特制水泥试块的电阻率.结果表明,随着压力的增大,电阻率变化存在可逆感应阶段、平衡阶段和剧增阶段,反映了试块内原有缺陷裂纹的闭合张开、新裂纹的萌生和裂纹的扩展破坏,并从导电机理上进行了分析.碳纤维水泥试块的这种特性,使其可作为一种本征智能材料,用于混凝土大坝等工程的无损检测.

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