摘要
应用多种微观分析测试手段,研究掺加纳米SiO2的超高性能水泥基复合材料水化进程及微结构.结果表明,由于纳米SiO2的高反应活性,促进了早期水泥水化的进程,纳米SiO2与水泥水化产物Ca(OH)2反应生成C—S—H凝胶;随着纳米SiO2质量分数(≤5%)的提高及养护龄期的延长,复合材料的孔隙率不断降低,孔径得到细化,且反应的纳米SiO2还起到颗粒增强的作用,使复合材料整体呈现出非常致密的微观结构,在宏观上表现出优异的力学性能.
The effects of nano-SiO2 on the hydration process and microstructure of ultra high performance of cementi- tious composite （UHPCC） were investigated via different analysis testing methods. The results indicate that the early hydration process of UHPCC is accelerated by adding of nano-SiO2. The porosity is reduced and the pore size is scaled as the content of nano-SiO2 （ ≤ 5% ） and the curing time increased. The reacted nano-SiO： particles also strengthen the composites, and thus the microstructure UHPCC has excellent mechanical oerformance. of UHPCC is very compact. As the experiment shows, the
出处
《深圳大学学报（理工版）》
EI
CAS
北大核心
2013年第6期611-616,共6页
Journal of Shenzhen University(Science and Engineering)
基金
江苏省自然科学基金资助项目(BK2012754)
高性能土木工程材料国家重点实验室开放基金资助项目(2012CEM007)~~
