人工气候环境模拟自然潮差环境混凝土氯离子侵蚀的相似性

Similarity of chloride ion penetration into concrete between the artificial weather environment and natural tidal environment

在自然气候环境中混凝土氯盐侵蚀是一个比较缓慢的过程,室内常用人工气候环境模拟的方法来研究混凝土氯离子的扩散性能。以舟山现场海洋环境下和人工气候环境下的侵蚀试验为背景,分析两种环境下氯离子的侵蚀浓度和扩散系数。结果表明:室内人工气候环境下的混凝土氯离子侵蚀过程类似于现场自然环境,混凝土氯离子扩散系数的相似倍数与混凝土水灰比有关。

The chloride ion penetration into concrete in nature weather environment is a comparison slowness process, so the laboratory inside in common use artificial weather experiment to study diffusion properties of chloride ion penetration into concrete.On the basis of chloride ion ingress concrete under onsite marine environment in Zhoushan and artificial weather environment,the concentration of chlo- ride ion and the diffusion coefficients were discussed under the two kinds of environment.The analysis results showed the chloride ion pen- etration into concrete under the artificial weather environment have similar law with that under natural tidal environment, the similarity ra- tio of diffusion coefficients was connected with water cement ratio of concrete.