著者

塩野 剛司 佐藤 ひろゆき 森谷 幸紀 岡本 泰則

出版者

公益社団法人 日本材料学会

雑誌

材料 (ISSN:05145163)

巻号頁・発行日

vol.59, no.6, pp.409-412, 2010-06-15 (Released:2010-06-19)

参考文献数

9

被引用文献数

1 1

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Tsuchi-kabe (called as soil wall or mud wall in English) utilized in Japanese traditional buildings is well known to have the characteristics of humidity conditioning. However, the characteristics have not been well examined. For preparing tsuchi-kabe material, soil, sand and rice straw are well mixed with water and then kept from a few weeks to months to promote fermentation. This aging process that is called as “Nekashi” gives plasticity to the material and is very important to construct tsuchi-kabe. In the present study, effect of “Nekashi” on the characteristics of humidity conditioning was examined. Long period of “Nekashi” enhanced the characteristics in nakanuri-kabe with a smaller amount of clay component.

著者

小田原 晶子 佐藤 ひろゆき 杉江 朋彦 森迫 清貴 塩野 剛司 北島 佐紀人 仲井 朝美 濱田 泰以

出版者

The Japan Society for Composite Materials

雑誌

日本複合材料学会誌 (ISSN:03852563)

巻号頁・発行日

vol.35, no.1, pp.27-32, 2009 (Released:2010-11-30)

参考文献数

4

被引用文献数

3 2

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There are many traditional technologies that have much knowledge to fabricate products in Japan. Such a knowledge is so-called technical intuitions and sensitivities. The craftsmen apply the technique for regenerating some traditional products and we defined the knowledge as “implicit knowledge.” The concept of this study is to scientifically analyze the implicit knowledge of those technologies. Here, the implicit knowledge would be traced from the contemporary view point. Thus, the knowledge can be applied to the modern technology which is adaptable to the market requirements. Finally the traditional technology retailed with the advanced technology many create a new technology. Kyokabe is one of Japanese clay wall for the traditional architectures. The clay wall consists of clay, sand and straws. Straws obviously play a reinforcement, thus Kyokabe can be treated as a composite material. Straws are immersed in the mixture of clay, sand and water for some period of time. The implicit knowledge which Plasterers (masters of Kyokabe) have acquired is that increase in the straws quantity results in increase in compressive strength and increase in the time improves workability in drawing. In this study, the implicit knowledge is scientifically resolved. The effects of the quantity and the immersion time on the compressive properties and workability of Kyokabe were also investigated.