·2792 ·
（3）拟合得到不同裂缝体积占比混凝土的水蒸
气渗透系数与含湿量的变化曲线，随着裂缝体积比增
大，曲线的斜率逐渐增大。
混凝土水蒸气系数随裂缝体积比的增大而增大，
增大比例最小为18.3 %，最大为131.9 %。裂缝体积
占比每增加0.05 %，水蒸气渗透系数增大比例持续增
大，最小值为 14.3 %，最大值为 19.4 %。
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