産業廃棄物の固化処理による有効利用(<小特集>土質安定材料小特集)

概要

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Considering the present situation of problems arising from the treatment and management of wastes, the possibility of utilizing certain types of industrial waste as construction materials has been investigated. In this study, the carbonated aluminated salts (CAS materials) were used as a hardening material to stabilize the following industrial wastes : an incinerated pulp ash, a stainless-steel slag (S-slag), and a fluidized bed combustion coal ash. In order to investigate hardening characteristics of the treated materials, measurements such as unconfined compression test, abrasion test, and durability test under repeated cycles of wetting and drying were carried out. X-ray diffraction analysis (XRD) and scanning electron microscope (SEM) observation were also performed to investigate their particular reactions. The results obtained by the experimental investigations have revealed that the addition of a certain amount of kaolin clay as a pre-mixed admixture to the raw materials considerably improve the hardening effect and durability of the materials. Furthermore, the contribution of CAS material on hardening reactions is substantially related to the mixing time or the consistency of the mixtures. It is considered that the hardened industrial wastes examined in this study can be applied as road and embankment materials.
社団法人日本材料学会の論文
1991-12-15