0-3型水泥基压电机敏复合材料的制备和性能

智能结构体系正逐渐被引入土木工程领域，它对于解决土木工程结构的安全性、耐久性、灵活性以及自适应性课题提供了更强的支持，在智能结构中较为突出的问题是机敏材料与母体结构材料的相容性，由于土木工程中主要结构材料－－混凝土的特性，在其它智能结构中具有良好相容性的机敏材料，在混凝土智能结构中有可能存在相容性问题，针对这 一情况，提出以水泥基材料作为压电机敏复合材料的基体，期望解决机敏材料与混凝土结构材料之间的相容性问题，研究结果显示：0－3型水泥基压电机敏复合材料在制备上是可行的，而形成的0－3型水泥基压电机敏复合材料内部结构均匀，压电性能优于同条件下聚合物基压电复合材料的性能，而极化电压却大大降低，在性能上满足了作为机敏材料在智能结构中的使用条件。

FABRICATION AND PROPERTIES OF 0-3 CEMENT BASED PIEZOELECTRIC SMART COMPOSITE

One of the crucial issues in the application of smart materials to concrete structure is the consistency between them and the host concrete materials. The development of cement based piezoelectric composite is proposed for the purpose of solving the mismatch problem. In this work, 0-3 cement based piezoelectric composites were fabricated, which have a uniform distribution of piezoelectric ceramic particles and dense inner structure. The test results show that the poling voltage of the composites is reduced drastically and the piezoelectric properties of the composite were superior to those of 0-3 polymer/ceramic piezoelectric composite in the same condition.