Abstract
Nonferrous metal slag is a circulating material which is a byproduct of nonferrous metal refining. Among these, copper slag and ferrous nickel slag (FNS) are already made Japanese Industrial Standard as aggregate for cement concrete and used. However, some are difficult to utilize due to their manufacturing process, particle diameter or shape and in particular much of the fine powder FNS is stocked. On the other hand, fine powder iron oxide generating as collection dust is used as soil stabilizer mixed with slaked limemainly in the Kyushu region. However, the strength developability of the stabilizer (Fe lime) has been founded through experience and remains to be investigated regarding the improvement effect for various ground materials. In this study, utilization of fine powder FNS as soil stabilizer mixed with slaked lime is proposed and the improvement effect for particular soil of the Kyushu region is evaluated along with the strength developability, environmental safety and economical aspects by comparison with Fe lime. As a result, the usefulness as the quality of soil stabilizer of the fine powder FNS was recognized.
