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.

Abstract
 1. 서 론
 2. 실험계획 및 방법
 3. 실험결과 및 분석
 4. 결 론

• 한준희(청주대학교 건축공학과) | Han, Jun Hui 교신저자
• 이영준(청주대학교 건축공학과) | Lee,Young Jun
• 현승용(청주대학교 건축공학과) | Hyun, Seung Yong
• 박경택(청주대학교 건축공학과) | Park, Kyung Taek
• 한민철(청주대학교 건축공학과) | Han, Min Cheol
• 한천구(청주대학교 건축공학과) | Han, Cheon Goo