Investigation on the Durability of used Wood, Japanese Hinoki, as Materials of Construction for Forest Strip Road

林带公路建筑材料日本桧木的耐久性研究

• 批准号: 03806024
• 负责人: IWAKAWA Osamu
• 金额: $ 1.15万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03806024/
• 关键词: Strip road; Woody construction; Durability of round wood; Japanese Hinoki; Utilization of thinning trees; 使用木材の耐久性; 間伐材の活用

Japan has a lot of man-made forest about 10 million hectares consisting of Japanese Hinoki and Sugi, so that a way to utilize effectively the thinning trees produced on site is very important to Japanese forestry.From this purpose, this research discusses the possibility of used woods for strip road. This paper discussed only Japanese Hinoki. The durability of used woods was compared with those of fresh woods as standard samples by means of Brinnel hardness, compression strength and bending strength. From experiments, the followings were drawn: (1) the Brinnel hardness of the used wood was less than those of the standard. The aging was realized a little. However, it was concluded that the result was not sighnificant statistically. (2) The compression strength, Young's modulus in compression parpendicular to the grain of wood, did not decrease in two years use. (3) The bending strength was scarecely different between the two years used wood and standard wood. (4) Among some woods buried into a wet place, some of sapwoods damaged by white ants were observed, but its damage was not found in the heart wood.

日本拥有约1000万公顷的日本扁柏和杉人工林，因此如何有效地利用现场产生的间伐树木对日本林业非常重要，本研究从这一目的出发，探讨了将木材用于带状道路的可能性。本文仅讨论日本扁柏。通过布氏硬度、抗压强度、抗折强度等测试方法，对废旧木材的耐久性与新鲜木材的耐久性进行了比较。试验结果表明：（1）废旧木材的布氏硬度低于标准值;衰老是实现了一点。然而，得出的结论是，结果在统计学上不显著。(2)抗压强度、抗压弹性模量随木材纹理的不同而不同，在使用两年后，其抗压强度、抗压弹性模量没有降低。(3)2年用材与标准材的抗弯强度相差不大。(4)在湿地埋置的木材中，观察到部分边材被白色蚂蚁侵害，而心材未发现白蚁侵害。

项目成果

Iwakawa O.: "A possibility of wood constructions for strip roods based on the durability of used woods" Journal of Forest Engineering,New Brunswick University Canada. 1993.7月号 予定. (1993)

Iwakawa O.：“基于旧木材耐久性的条形木结构的可能性”，加拿大新不伦瑞克大学森林工程杂志，1993 年 7 月发行。

Iwakawa O.: "A possibility of wood constructions for strip roads based on the durability of used woods." Journal of horest Engineering,New Brunswick University Canada. (1993)

Iwakawa O.：“基于所用木材的耐用性，木结构道路的可能性。”

Iwakawa, Osamu: "A possibility of wood constructions for strip roads based on the durability of used woods." Journal of Forest Engineering New Brunswick University, Canada July 1993.

Iwakawa, Osamu：“基于所用木材的耐用性，为条形道路建造木结构的可能性。”

Osamu IWAKAWA: "Durability of used woods as materials of constructions for strip roads" University of New Brunswick,Canada.Journal of Forest Engineering in Canada.

Osamu IWAKAWA：“使用木材作为条形道路建筑材料的耐久性”加拿大新不伦瑞克大学。加拿大森林工程杂志。