硅酸盐通报2018，Vol.37Issue(4)：1309-1314,6.
低温(3℃)养护条件下引气混凝土孔结构对强度与抗渗性的影响
Effect of Pore Structure of Air-entrained Concrete on Strength and Impermeability at Low Temperature(3 ℃)Condition
摘要
Abstract
The effects of pore structure parameters on early strength and impermeability of air-entraining concrete at 28 d and 56 d under low temperature(3 ℃)were studied.The results show that with the increasing of air content, the porosity increases, the concrete strength decreases gradually, and the impermeability decreases first and then increases.When the amount of air entraining agent is appropriate, the spacing factor of concrete is the best, at this point, the permeation path of chloride ion becomes longer;under low temperature(3 ℃)condition,the pore size distribution of the concrete degrades,and the main pore size distribution range of the concrete increases obviously; finally, with the growth of concrete age,pore size of concrete develops towards the tendency that large hole decreases, small hole increases,but the development seed is relatively slow.关键词
孔结构/强度/抗渗性Key words
pore structure/compressive strength/impermeability分类
建筑与水利引用本文复制引用
梁柯鑫,王起才,张凯,张戎令,崔晓宁,王炳忠..低温(3℃)养护条件下引气混凝土孔结构对强度与抗渗性的影响[J].硅酸盐通报,2018,37(4):1309-1314,6.基金项目
国家自然科学基金(51268032) （51268032）
长江学者和创新团队发展计划滚动支持(IRT_15R29) （IRT_15R29）
