下水汚泥焼却灰やアルミニウム汚泥を用いた石灰系安定処理土に関する研究

Abstract

本文は, 廃棄物有効利用の観点から, 下水汚泥焼却灰やアルミニウム汚泥を用いた石灰系安定処理土の道路舗装への適用性を室内実験により評価し, 電子顕微鏡やX線回折装置を用いて安定処理土の力学的特性の解明を目的とした実験, 研究結果を示すものである。本研究の結果から, 下水汚泥焼却灰やアルミニウム汚泥を混合した石灰系安定処理土は, アスファルト舗装要綱に示される路床, 路盤の品質基準を満たすものであり, 道路舗装への適用性は高いと判断される。

Aluminum and sewage sludge are the waste from industry or habit life. The purpose of this paper is to investigate the utility of these waste as road base material.Because the ferrum lime stabilized soil has been used actuality for road base material for long time, by mixing the aluminum or sewage sludge with ferrum lime, the mixture may be used as stabilizer for road base material.It may be hoped to improve pavement as well as make use of waste. In order to demonstrate the benefit of the mixture material toward improvement of pavement performance, a series of laboratory tests had been carried out such as unconfined compressive test, bending test and cyclic dynamic triaxial test, furthermore, the micro structure of stabilized soils had been observed by SEM(scanning electron microscope) and X ray analyses device to make out the mechanism of improving in strength and durability of stabilized soils.