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基于饱和水汽压方程探讨了湿度采用相对湿度和水汽密度表达形式间的关联,并通过理论推导和现场实测法研究了自然环境中空气湿度变化和混凝土内不同深度处湿度响应规律,从而建立了自然环境湿度作用谱和混凝土内湿度响应谱模型.试验结果表明:所构筑的自然环境湿度作用谱和混凝土内湿度响应谱模型可用于描述环境湿度变化与混凝土内湿度响应规律.自然环境相对湿度曲线随时间发生周期性波动,而混凝土内湿度随距表层深度的增加而增大且一定深度处相对湿度短时间内基本恒定.与采用相对湿度表达形式相比,采用水汽密度表达形式可更好地定量表征不同环境条件下的环境湿度变化规律.
Based on the saturated vapor pressure equation, the relationship between relative humidity and water vapor density was discussed, and the variation of air humidity in natural environment and the humidity response at different depths in concrete were studied by theoretical derivation and field measurement. Environmental humidity action spectrum and concrete humidity response spectrum model.The experimental results show that the constructed natural humidity profile and the concrete humidity response spectrum model can be used to describe the environmental humidity changes and the humidity response of the concrete.Natural environment relative humidity curve The time fluctuates periodically, but the humidity in concrete increases with the increase of surface depth and the relative humidity in a certain depth is almost constant in a short period of time.Compared with the relative humidity expression, the water vapor density expression can be used to quantify Characterize the changes of environmental humidity under different environmental conditions.