预估海港工程混凝土氯离子浓度分布新方法

New prediction method for distribution of chloride concentration in concrete of marine works

基于F ick第二定律和有限差分原理,提出了预估海港工程混凝土氯离子浓度分布的新方法.该方法考虑了混凝土对氯离子固化的线性关系、混凝土边界氯离子浓度具有累积变化,以及制备混凝土的水泥品种、配合比和氯离子侵蚀时间、环境湿度、作用荷载对氯离子扩散系数的影响.

Based on the Fick＇s Second Law and finite difference principle, a new prediction method for distribution of chloride concentration in the concrete of marine works is developed. The new method takes into account of the linear relationship of chloride ion bound by concrete, of the accumulation of chloride concentration at the boundary of concrete, and of the influences of cement＇s type, mixed ratio, corrosion time of chloride ion, circumstance relative humidity and load on the diffusion coefficient of chloride ion.