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中文摘要：
以钱塘江强感潮河口环境下3种水灰比的普通水工混凝土耐久性暴露试验,结果表明：在开始的1~3年内,该环境条件下的水工混凝土氯离子扩散系数降低明显,1 500 d后降低的幅度和速率很小,并趋于稳定;得到的氯离子扩散系数的时变模型能较好地反映该环境条件下混凝土扩散性能的衰减过程。
英文摘要：
According to the hydraulic concrete of ordinary beams with three different water cement ratios exposed to the strong tidal range in the Qiantang River, the results demonstrated that diffusion coefficients of chlorine ion of hydraulic concrete obviously reduced in the beginning 1-3 years, but the reduction and speed were very small and gradually remain stable after 1 500 days.The erosion of hydranlic concrete exposed to the strong tidal range can be well reflected by the model obtained.
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