産業廃棄物を用いたへどろの固化処理について

抄録

The purpose of this study is to improve the trafficability or earthmoving property and strength of muddy soil which is high in water content and organic matter. In order to achieve this objective, the effect of additive mixtures such as concrete powder, paper sullage ash, coal fly ash and granular bentonite on the strength development was investigated.
As a result, it became clear that with the addition of each of the used mixtures to the muddy soil, the strength of the soil was enhanced. In particular, the coal fly ash gave the largest hardening effect due to the production of ettringite. Consequently, if these mixtures are used, it is possible to decrease the quantity of hardening agent to be used and to reduce the curing period during which the strength reaches the expected level. When the strength is low, the unconfined compression test can not be performed, but it can be estimated by fall cone test. Therefore, it is possible to predict the long term strength and to utilize the results of this test for a quality control of the treated soil.