Fabrication and Characteristic of Green-Concrete by Using Recycled Steel Slag

摘要

To replace steel slag for natural sand completely, the mix proportions of steel slag in concrete was adjusted according to tab density and replacement ratio of Metakaoline/Cement were established. And then testing for slump, setting time, and compressive strength was conducted. According to test results, the compressive strength of concrete using steel slag was lower than that of concrete using natural sand (BAO concrete). But by adjusting the amount of steel slag in concrete according tab density so that the fine aggregate proportions change 44% to 38%, the compressive strength of concrete using the steel slag could even be higher than BAO concrete. And the chloric content of concrete using steel slag increased as the replacement ratio of steel slag increased, but it is satisfied with the chloric content of fresh concrete 0.30 kg/m~2 below(concrete standard specification regulation value).