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首页> 外文期刊>International journal of applied mechanics and engineering >THE EFFECT OF THE ACCURACY OF CAPILLARY DIFFUSION COEFFICIENT DETERMINATION ON MOISTURE STATE OF CURTAIN WALLS DURING RAINFALL
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THE EFFECT OF THE ACCURACY OF CAPILLARY DIFFUSION COEFFICIENT DETERMINATION ON MOISTURE STATE OF CURTAIN WALLS DURING RAINFALL

机译：毛细扩散系数的准确度测定对降雨过程中幕墙水分状态的影响

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The article presents a brief description of basic methods to determine the moisture transfer coefficient in capillary-porous materials. The method to determine the moisture transfer coefficient within the hygroscopic range is well documented and can easily be used. A calculation model for the moisture diffusion coefficient based on the water absorption coefficient, mass water content in material volume unit as a result of capillary rise, capillary tortuosity and capillary saturation was developed. The study showed that the evaluation of the moisture state of a curtain wall material must allow for both changes in relative air humidity and precipitation volume, which result in an increase in the moisture gradient, additional stresses and reduction in material stability. In addition, a material with high moisture content is characterized by deteriorated thermal insulation properties.
机译：本文简要介绍了确定毛细孔材料中水分传递系数的基本方法。确定在吸湿范围内的水分传递系数的方法已得到充分证明，可以轻松使用。建立了基于吸水系数，毛细上升引起的物料体积单位质量含水量，毛细弯曲和毛细饱和度的水分扩散系数计算模型。研究表明，对幕墙材料的水分状态进行评估必须考虑到相对空气湿度和降水量的变化，从而导致水分梯度的增加，附加应力以及材料稳定性的降低。另外，具有高水分含量的材料的特征在于差的绝热性能。

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