硅酸盐通报2011，Vol.30Issue(4)：943-949,7.
水灰比对混凝土氯离子扩散系数和碳化速率影响的试验研究
Experimental Study on Influence of Cement Water Ratio on Chloride Diffusion Coefficient and Carbonation Rate of Concrete
摘要
Abstract
Chloride diffusion coefficient and carbonation rate are the main indexes to reflect concrete performance of durability. Based on the test and data analysis, experiment was carried out by chloride immersion test and rapid carbonation test to study the laws of chloride diffusion coefficient and carbonation rate influenced by cement water ratio. The results shows that the higher water-cement ratio the greater the chloride ion diffusion coefficient. However, as the water-cement ratio is lower, the influence degree reduces gradually. For carbonation, the higher water-cement ratio the greater the carbonation rate, and the relationship between carbonation rate coefficient and water-cement ratio is linear. By combining the experimental data and comparative analysis of existing models, more reasonable expressions of cement water ratio influence coefficient were proposed as well as the corresponding suggested values.关键词
耐久性/扩散系数/表面氯离子浓度/碳化/水灰比Key words
durability/ diffusion coefficient/ surface chloride concentration/ carbonation/ cement water ratio分类
建筑与水利引用本文复制引用
金骏,吴国坚,翁杰,王传坤,岳增国,许晨..水灰比对混凝土氯离子扩散系数和碳化速率影响的试验研究[J].硅酸盐通报,2011,30(4):943-949,7.基金项目
国家自然科学基金重点项目(No.50538070) （No.50538070）
