Studies on the wood preservation from decay and termite attack using humidity control agents

本研究旨在证明，在使用湿度控制剂和隔热材料的情况下，用于底层房屋的木质材料的耐久性可以保持数年。主要结果是：1。封闭空间中木炭的质量与湿度控制能力之间的关系可以定量估计。通过与沸石、硅藻土、钻石等无机材料的湿度控制能力比较，炭的湿度控制能力优于无机材料。研究了落叶松木材的腐烂和白蚁耐久性，以及地下白蚁取食活动的最佳温湿度组合。连续两年测量了使用木炭的房屋模型的温度和相对湿度（RH）。模型的施工方法和通风方式影响相对湿度值。

This study aimed to demonstrate that durability of wooden materials used in a bottom house could be maintained for years using humidity control agents and heat insulation materials.Principal results are :1. Relationship between the mass of charcoal and humidity control capacity in a closed space could be quantitatively estimated. On comparison of the humidity control capacity of the charcoal with inorganic materials such as zeolite, diatom earth and lapilli, the ability of charcoal was superior to that of the inorganic materials.2. Decay and termite durability of Japanese larch wood, and optimum temperature-humidity combination for the feeding activities of Japanese subterranean termites were investigated.3. Temperature and relative humidity (RH) of house models with charcoal were measured continuously for two years. Methods for construction and air ventilation of the models affected the value of RH.