Earticle

초록

영어

The corrosion of reinforcing bar induced by chloride ingress is the main deterioration cause of coastal reinforced concrete structures. Pozzolanic materials are main subjects for increasing such resistance of chloride migration, and recently more attention is paid to metakaolin as a new pozzolanic material. Metakaolin is a cementitious material for producing high-strength concrete. The purpose of this study is to investigate chloride migration of ternary concrete containing metakaolin by chloride migration coefficient. In order to achieve the study objective, test of chloride migration coefficient, compressive strength, XRD and SEM, etc. have been conducted by selecting factors such as W/B, replacement content of pozzolanic materials, curing period, etc. As a result, it has been confirmed that ternary concrete containing metakaolin shows a lower chloride migration coefficient than plain and binary concrete. And as the replacement ratio of metakaolin becomes increasing, resistance of chloride migration enhances, and a high level of synergy effect has been confirmed as the case of mixture of metakaolin and blast-furnace slag. These test results show dominant effects of metakaolin in ternary concrete, and thus, it can be stated that ternary concrete containing metakaolin is very effective for resistance of chloride migration.

목차

Abstract
 1. 서 론
 2. 실험계획
  2.1 실험재료
  2.2 실험방법
 3. 실험결과 및 고찰
  3.1 굳지 않은 콘크리트의 특성
  3.2 콘크리트의 압축강도 특성
  3.3 콘크리트의 염화물 확산계수
  3.4 압축강도와 염화물 확산계수의 관계
  3.5 포졸란 혼입 콘크리트의 XRD 분석 결과
  3.6 포졸란 혼입 콘크리트의 미세구조
 4. 결 론
 참고문헌

저자

• 최세윤 [ Choi, Se-Yoon | 부산대 대학원 석사과정 ]
• 김영수 [ Kim, Young-Su | 부산대 건축공학과 정교수, 공학박사 ] 교신저자

참고문헌