On the Termite-resistance of timber for building materials : The comparison between Field Test and Laboratory Test (Department of Forestry)
| Autor: | Yaga, Shiryo |
|---|---|
| Jazyk: | japonština |
| Rok vydání: | 1970 |
| Zdroj: | 琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus. 17:243-249 |
| ISSN: | 0370-4246 |
| Popis: | 建築用木材, 18樹種(本土産材7個, 南方産材5個, 沖縄産材6個)について, 屋外試験と実験室的な試験方法を耐蟻性の立場から比較検討し, 併せて, 比重, 抽出量についても調べた。なお各供試材はイエシロアリに食害させた, その結果, つぎのようなことがわかった1)屋外試験と実験室的な試験方法は抗蟻の傾向はよく似ている。しかし再現性, 信頼性の点で, 実験室的な試験方法は有効と思われる。2)輸入材では一般的に本土産材が抗蟻値が大きい, 本土産材でもモミ, アカガシ, モツコクの順で強く, また南方産材でアピトン, ラーミン, タイワンヒノキの順で強いことが示された。スギで沖縄産のミシヨウスギ, ジスギは本土産のそれより抗蟻性が大きいことがわかった。3)比重と抽出量とは抗蟻値と相関関係はみられなかった。 On 18 species of timber (Japanese timber 7,south sea islands timber 5,Okinawan timber 6) for building materials, the relation with termite-proof value, Alcohol-benzene extracives and specific gravity in air dry were investigated by the comparision between Field Test and Laboratory Test. Besides, in this reports, each test timber was eaten out the suberranean termite, Coptoterms formosanus Shiraki The results obtained are summarized as follows : 1) On the termite-proof value, Field Test is similar to Laboratory Test. But Laboratory Test is effective with reappearance and simplicity. 2) Generally speaking, Japanese timber has termite-proof value greater than south sea islands timber. In the Japanese timber, momi, aka-gashi and mokkoku has a great termite-proof value and in the south sea islands timber, apitong, ramin and taiwana hi-no-ki has a great termite-proof value. Otherwise, it was found that in the Okinawan timber, misho-sugi, ji-sugi had termite-proof value greater than Japanese sugi. 3) Alcohol-benzene extractives and specific gravity in air dry directly are no concerned in termite-proof value. 紀要論文 |
| Databáze: | OpenAIRE |
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