Concrete is a very useful construction material for the sealing disposal of hazardous substances. In general, mass concrete is applied to these structures. And, the mineral admixtures are recommended for the long term performance. Calcium leaching could be happened due to the contact with pure water in underground structures. Thus, it is needed to evaluate the resistance of calcium leaching for concrete mixed with mineral admixtures. From the test results, the mineral admixtures are effective to the improvement of long term compressive strength and chloride diffusion coefficient in concrete members. When calcium leaching is happened, however, the reduction of compressive strength and chloride penetration resistance is severe than OPC case, the micro pore distribution is adversely affected. Consequently, when the mineral admixtures are applied to underground structures which is exposed to calcium leaching environment, it is desirable to reduce water-to-binder ratio, to expose after the sufficient pozolanic reaction, and to use BFS than FA.

1. 서 론
 2. 실험 계획 및 방법
  2.1 사용재료 및 실험 변수
  2.2 시험체 제작 및 칼슘용출 방법
  2.3 실험 방법
 3. 실험 결과 및 분석
  3.1 칼슘용출에 따른 콘크리트의 열화두께
  3.2 칼슘용출에 따른 압축강도 특성
  3.3 칼슘용출에 따른 염화물 확산계수 특성
  3.4 칼슘용출에 따른 미세공극구조 특성
 4. 결 론
 감사의 글
 References

• 최소영(강릉원주대학교 토목공학과 박사과정) | So-Yeong Choi
• 최윤석(한국건설생활환경시험연구원 선임연구원, 공학박사) | Yoon-Suk Choi
• 양은익(강릉원주대학교 토목공학과 교수) | Eun-Ik Yang 교신저자