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Study on the Composition of the ALC External Walls and the Establishment of the Regional Work Specification in Cold District.

寒冷地区ALC外墙的构成及区域工作规范的制定研究。

基本信息

批准号：
07650651
负责人：
HASEGAWA Toshio
金额：
$ 1.34万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650651/
关键词：
autoclaved light-weightconcrete composition of wall frost damage varor condensation water vapor transfer

项目摘要

We set up seventeen types of ALC external walls in three conditions of outdoor temperature (0, -10,1-20ﾟC : constant) and three conditions of indoor air humidity (40,60,80% R.H.in 20ﾟC) for thirty days, and measured the quantity of vapor flowed into ALC external walls from indoor and the quantity of internal condensation of ALC external walls.As the outdoor temperature lowered and the indoor air humidity is higher, the quantity of flowing vapor and internal condensation increased. On this point, a simple ALC walls (50mm thickness) is typical. As the outdoor temperature lowered, most of flowing vapor into wall accumulated inside wall.We wish this study enable us to select a suitable construction method of the external wall in cold district. We set up several ALC external walls in several conditions of outdoor temperature and indoor humidity, and measured the quantity of vapor flowed into the walls from indoor and the quantity of internal vapor condensation of the walls.As a result, when the outdoor temperature changed with one day period, the lower the maximum outdoor temperature, the more the quantity of the internal vapor condensation. And we knew the vapor flowed into the wall had a tendency to concentrate in the freezing area of the wall in case of the change of the outdoor temperature.

我们在室外温度（0、-10、1-20 ° C：恒定）和室内空气湿度（40、60、80%www.example.com 20 ° C）三种条件下设置十七种ALC外墙R.H.in，持续三十天。并测量了从室内流入ALC外墙的蒸汽量和ALC外墙内部的冷凝量，随着室外温度的降低和室内温度的降低，空气湿度越高，流动的水蒸气量和内部冷凝量越大。在这一点上，一个简单的ALC墙（50毫米厚）是典型的。随着室外温度的降低，流入墙体的水蒸气大部分积聚在墙体内部，希望本研究能为寒冷地区外墙的施工选择一种合适的施工方法。在不同的室外温度和室内湿度条件下，设置多个ALC外墙，测量从室内流入墙体的水汽量和墙体内部水汽凝结量，结果表明，当室外温度以一天为周期变化时，室外最高温度越低，墙体内部水汽凝结量越大。同时，我们也知道，在室外温度变化的情况下，流入墙体的水蒸气有集中在墙体冻结区的趋势。