摘要
本文从离子迁移的角度详细地分析了混凝土的碳化机理,并论述了氯离子和碳化同时存在时混凝土加速腐蚀的现象。然后,回顾了国内外现有的碳化深度预测模型,并分别指出其优缺点。最后,结合本人在试验基础上得到的混凝土碳化深度预测模型,通过一个实际工程对各种模型进行了对比分析,发现对于同一工程用不同的预测模型计算,得到的数据差别很大,现有预测模型不具有普遍性。
In this paper, based on the ion transfer, the mechanism of concrete carbonation is analyzed, the accelerated corrosion phenomenon of concrete was discussed when Cl- and carbonation coexist in the concrete. Then various existing predictive models of concrete carbonation depth are summarized and discussed respectively, with the advantages and disadvantages pointed out. Finally, combining with the predictive models of comcrete carbonation which was based on the trial, some kinds of predictive models of concrete carbonation depth are compared through a practical engineering. We found that the calculate results of the same engineering by different predictive models varied significantly which means that the predictive models had not universality.
出处
《重庆建筑》
2009年第5期47-50,共4页
Chongqing Architecture
关键词
混凝土碳化
离子迁移
预测模型
concrete carbonation
ion transfer
predictive model
