In this study, as series of studies to provide how to apply coal gasification slag(CGS) as one of byproducts for high strength concrete, from a newly introduced power generation method in Korea, the possibility of using a mixed aggregate with 25 percent of CGS as a concrete residual were investigated. The results indicated that the compressive strength of concrete using CGS at early age was lower than that using CS, but compressive strength at 28 days showed similar levels of strength enhancement.
In this study, CGS is a concrete admixture material that has been investigated as a way to promoto recycling of CSG. As results, Show that the early strength is low and the activity index is according to the degree of fineness is insignificant
In this study, the correlation with a proctor penetration resistance tester is analyzed for the purpose of judging the setting time of concrete by the convenient portability of the durometer which is a rubber hardness meter.The result of this study showed a high correlation between the value of the tilt of the durometer and the measured value of the proctor penetration resistance tester.
This study is a basic review of the use of CGS generated in IGCC as a fine aggregate for concrete, and a basic feature of cement mortar was considered. The analysis shows that CGS and CS mix ratio is best when the CGS is mixed at about 0~50 % On the basis of workability and strength improvement effects. This is expected to contribute to the strength, workability, and quality improvement of concrete given the optimal mixing of CGS.