| 要旨 |
This study aims to investigate the performance of spherical shaped EAF slag fine aggregate concrete. Two experimental series having W/C ratio of 0.4 and 0.6 were examined in this study to compare the effect of EAF slag fine aggregate. In each series, 4 types of concrete were produced for the slag replacement ratio of 0.0, 0.3, 0.5 and 1.0 and tested for fresh behaviors and mechanical properties after a curing age of 7 and 28 days. Higher bleeding was observed when sand is completely replaced by slag and this effect is pronounced for W/C of 0.6. Increase in mechanical behaviors with the increment of slag ratio was observed for W/C of 0.4. However, an opposite behavior was observed for W/C of 0.6. Fresh and mechanical behaviors indicate that spherical shaped EAF slag fine aggregate can be a good material for the W/C of 0.4. |