Shoichi Akiba

THE APPLICATION OF NONFERROUS METAL SLAG AS FINE AGGREGATE OF THE ASPHALT MIXTURE

This paper presents use of nonferrous metal slag as fine aggregate of the asphalt mixture. The nonferrous metal slag, which is produced in the process to smelt copper or ferronickel, was used at the experiment. Evaluations about the environment safety and the quality of the several slags were carried out in the experiment. As the results, the quality of the slag satisfied the standard of fine aggregate of the asphalt mixture, and the performance of a mixture satisfied using as the surface material fully. And, relationship between the quality of the slag and performance of the asphalt mixture became definite. In particularly, there was a slag that the content of several toxic substances exceeded its standard, but it was confirmed that is no problem by the environmental soil quality examinations at the field test.