A STUDY ON UTILIZATION OF NONFERROUS METAL SLAG AS FINE AGGREGATE FOR ASPHALT MIXTURE

Abstract

  This study was carried out in aiming for utilization of nonferrous metal slag as fine aggregate for asphalt mixture. The nonferrous metal slag, which is produced in the process to refine copper or ferronickel, was used at the experiment. Several examinations were executed to evaluate the environment safety and the quality of the slag and the characteristics of asphalt mixture with the slag. As the results, it was clarified that the quality of the slag satisfied the standard of fine aggregate of the asphalt mixture and the mutual-rubbing reformation of slag is effective for the asphalt mixture.
  Furthermore, it was confirmed that the asphalt mixture is satisfied performance as the surface material fully at the field test. In particularly, there was a slag that the content of several toxic substances exceeded its standard of the environment safety, but it was confirmed that does not affect the environment by the soil quality examinations at the field test.