Abstract
This study was carried out assuming the melt-solidified slag is used as a fine aggregate for mortar and concrete. Mortars were manufactured using two kinds of melt-solidified slags that produced in different sites for a fine aggregate. The influence that the replacement ratio of the melt-solidified slag to the natural aggregate gave to fresh properties and strength of mortar was examined. In addition, the effects of a grading control of the aggregate on the properties of the mortars were also investigated when the melt-solidified slag is grinding with the ball mill for the particle properties improvement. Furthermore exposure tests of concrete using melt-solidified slag fine aggregate sited on snowy and cold region were examined. Weight of the concrete, the dynamic modulus of elasticity and the brightness of concrete surface, was compared with the case of using natural sand. As a result, basic properties of mortar using the melt-solidified slag were clarified. Using the ground melt-solidified slag was effective in the performance improving of mortar.
