长江科学院院报2011，Vol.28Issue(10)：175-179,5.
CW系列混凝土表面保护修补材料研究与应用
Study and Application of CW Series Concrete Surface Protection and Patching Materials
摘要
Abstract
The surface of hydraulic concrete must be protected and repaired to improve its durability. To this end, a new type of CW series concrete surface protection and patching materials, namely nano-silicon dioxide/polyurea composite materials were synthesized by researchers in Yangtze River Scientific Research Institute. The materials were produced through ultrasonic dispersion by adding organosilane coupling agent, reactive diluent and nano-silicon dioxide to the synthcticfat of polymerization of polyaspartic esters and isocyanates. Meanwhile, the effects of ultrasonic dispersion time, the amount of nano-silicon dioxide, and the type and amount of isocyanate on the properties of the composites were explored. It was found that the newly developed materials were environmentally friendly, highly durable and cohesive and could be easily operated under dry and wet conditions, which could effectively improve the properties against ultraviolet aging, abrasion, permeability, carbonization, frost, and chemical corrosion of concrete. In this sense, they can be widely used in danger-eliminating and reinforcing for old hazardous reservoirs , surface protection and crack repairing of new hydraulic constructions, as well as other anti-seepage and antiaging projects in hydraulic engineering. Up until now, the materials have been applied in the danger-eliminating and reinforcing of Three Gorges Dam, Danjiangkou Dam, the Middle Route Project of the South-to-North Water Diversion Project, Yichang Tangduhe reservoir and Shangjiahe reservoir.关键词
聚天门冬氨酸酯/聚脲/纳米复合材料/水工混凝土/耐久性Key words
polyaspartic esters/ polyurea/ nano composites/ hydraulic concrete/ durability分类
建筑与水利引用本文复制引用
魏涛,廖灵敏,韩炜,肖承京,李珍,汪在芹..CW系列混凝土表面保护修补材料研究与应用[J].长江科学院院报,2011,28(10):175-179,5.基金项目
科技部国际科技合作项目(2010DFB70470) （2010DFB70470）
水利部科技推广计划项目(TG1113) （TG1113）
中央级公益性科研院所基本科研业务费专项资金项目(CKSF2011015/CL+ SH) （CKSF2011015/CL+ SH）
