微胶囊对水泥自修复复合材料微观结构的影响  

Influence of microcapsule on microcosmic structure of self-healing cementitious composite

作　　者：倪卓[1] 邢锋[2] 石开勇[2] 黄战[2] 黄健成[1] 毕诚[1] 

机构地区：[1]深圳大学化学与化工学院,深圳518061 [2]深圳大学土木工程学院,深圳518061

出　　处：《深圳大学学报（理工版）》2015年第1期68-75,共8页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(51378315);深圳市战略新兴产业发展专项资金资助项目(JCYJ20130329114709152)~~

摘　　要：在环氧树脂微胶囊的制备实验基础上,制备水泥自修复复合材料,研究养护龄期和微胶囊掺量对水泥自修复复合材料微观结构的影响,采用多种测试仪器对复合材料孔结构特性、电性能、抗渗透性能和水化热进行了分析.结果表明,随着养护龄期的增加,复合材料电阻值显著增大,而累积孔体积和吸水性系数减小;随着微胶囊掺量的增加,电阻值增大,而累积孔体积、吸附量与脱附量、吸水性系数以及水化放热速率与放热量减小.Self-healing cementitious composites were prepared based on the preparation methods for epoxy microcap-sules. The impacts of the curing age and the microcapsule content on microcosmic structure for the self-healing cementitious composites were studied. The pore structure and distribution, the electrical property, the penetration resistance and the hydration heat of composites were analyzed by various instruments. The results show a significant increase in resistance and decreases in cumulative pore volume and coefficient of water absorption with the increase of curing age. When increasing the microcapsule content, we find an increase in resistance as well as decreases in absorption and desorption, the cumulative pore volume, the coefficient of water absorption, the hydration exothermic rate and the hydration heat.

关 键 词：建筑材料 混凝土 自修复水泥 微胶囊 渗透性 阻抗谱 水化热 

分 类 号：TU528[建筑科学—建筑技术科学]