Abstract
In this paper, our purpose is to make it clear as follows the characteristics of RCD concrete in the case of varying the mixing ratio of each kind of three coal powders; the characteristics of Slump Dam Concrete in the case of the mixing ratio of each kind of three coal powders and filler.
We found some interesting results as follows: in RCD concrete, the VC value became lower, the compressive strength became higher at the most efficient mixing ratios in the case of any three coal powders; in Slump Dam Concrete, the compressive strength became higher, whereas slump decreases in the case of increasing the mixing ratio of each kind of three coal powders and filler.
