摘要
为预测氯盐渍土地区混凝土结构的使用寿命,采用试验方法与数值模拟方法,统计分析了混凝土保护层中氯离子扩散性特征,采用Monte-Carlo法对Fick第二扩散定律进行数值模拟,评估不同保护层厚度混凝土结构的使用寿命。结果表明:氯离子扩散性特征较好地服从正态分布,保护层厚度对混凝土结构使用寿命有明显的影响,适当增加保护层厚度可使结构使用寿命得到显著提高。
In order to predict the service life of concrete structures in chlorine saline soil region, experimental research and numerical simulation were adopted to analyze the chloride ion diffusion characteristics in the concrete cover. Monte-Carlo method was used to simulate Fickrs second law and to assess the service life of concrete structures with different cover thicknesses. The results show that chloride ion diffusion in the concrete cover fairly well coincides with normal distribution. The concrete cover thickness has significant impact on the service life of concrete structures. Appropriate increasing the cover thickness can significantly improve the service life of concrete structures.
出处
《腐蚀与防护》
CAS
北大核心
2016年第9期743-747,752,共6页
Corrosion & Protection
基金
国家自然科学基金(51368040)
内蒙古自然科学基金(2015MS0505)
内蒙古自治区高等学校青年科技英才支持计划(NJYT-14-B08)
