Examination of the utilization of the bamboo in the soft ground improvement

Abstract

In Japan, damage to the forest by the propagation of bamboo is reported. Therefore periodical felling and effective inflection of bamboo are required. Currently, the bamboo is crushed to chips, and these materials have been promoted in various field. Bamboo chips are material which contains a lot of fiber. Therefore it has water absorption ability. The very soft dredged soil which has high water content is required to make improvements preliminarily such as stabilization and dehydration process for conveyance and effective utilization. In general, the cement solidification usually used a predominant improvement method. However, it requires a large amount of cement about dredged soil having high water content and the increase of pH due to the addition of cement is also concerned. The purpose of this study is to improve the very soft dredged soil which has high water content inexpensively and effective by the addition of shredded waste bamboo. As a result, in the water-absorption property of bamboo chips, the method of crushed bamboo have different capacities to water-absorption ability of bamboo chips. In the improvement effect of bamboo chips, the bamboo chips having high water absorption potential is possible to improve to the conveyable material, with less additive rate. In the mechanical characteristic of improved soil using cement and bamboo chips, soil strength is increased by adding the bamboo chips.