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首页> 外文期刊>Journal of Architectural Engineering >Exposure to Condensation Moisture of Sheathing in Retrofitted Leaky Wall Assemblies
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Exposure to Condensation Moisture of Sheathing in Retrofitted Leaky Wall Assemblies

机译：翻新式漏水墙组件中护套的冷凝水暴露

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摘要

Exfiltration of moist indoor air during winter conditions may lead to the gradual wetting of the sheathing of wall assemblies that are not airtight. In this study, seven full-scale wood-frame wall specimens were tested to evaluate the impact of both the geometry of the air leakage path and the addition of rigid insulation on the warm side or the cold side of the assembly on the hygrothermal response of wall assemblies. Walls were exposed to 72 days of steady-state winter conditions and 47 days of steady-state late spring conditions. The position of the added rigid insulation and the geometry of the air leakage paths were different in each wall specimen. The moisture content of the fiberboard sheathing was monitored, and the results are presented. The evolution over time of the moisture distribution across the plane of the sheathing is also presented. The duration of exposure to moisture content above 19 and 28% is examined, allowing a comparison of the performance of the specimens. Leaky assemblies with vapor-tight insulation board added on their cold side were exposed to high moisture content longer than the assemblies not reinsulated or reinsulated on their warm side because the assemblies without insulation on the cold side of the sheathing were exposed to a buildup of frost that prevented moisture to be absorbed by the sheathing.
机译：在冬季，潮湿的室内空气会渗出，导致不密封的墙组件的护套逐渐变湿。在这项研究中，测试了七个全尺寸木结构墙样本，以评估漏气路径的几何形状以及在组件的热侧或冷侧添加刚性绝热材料对吸湿热响应的影响。墙组件。墙壁暴露于72天的冬季稳定状态和47天的春季后期稳定状态。在每个壁试样中，增加的刚性绝缘的位置和漏气路径的几何形状都不同。监测纤维板护套的水分含量，并给出结果。还介绍了水分在整个护套平面上的分布随时间的变化。检查了暴露于水分含量高于19％和28％的持续时间，从而可以比较样品的性能。漏气的组件在其冷侧添加了防潮绝缘板的暴露于高水分含量的时间要长于未重新绝缘或在其温暖侧进行重新绝缘的组件，这是因为在护套的冷侧上没有绝缘的组件暴露于霜中防止水分被护套吸收。

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