Earticle

초록

영어

This paper investigated the temperature history of mass concrete mock up structure considering different heat generation by varying with mixture proportion. Setting time difference between high early strength mixture (E-P) and retarding mixture (R-F30) was 14.5hours. Incorporation of 30% of fly ash contributed to 10℃ of hydration heat reduction. In generally used A and B combination, bottom concrete shows earlier hydration, while C～G combination showed reverse tendency and thus, this method can reduce the crack occurrence. For compressive strength, the mixture combination of S-F30(top section), R-F30(bottom section), which incorporate fly ash exhibits a reduction in compressive strength by as much as 5～10MPa compared with other mixture
combination. There's no remarkable difference of strength development with and without fly ash based on the results of core test.
Therefore, heat generation difference method has beneficial effect on reducing crack induced by hydration heat resulting from heat generation difference between surface and center section.

목차

Abstract
 1. 서론
 2. 실험계획 및 방법
  2.1 실험계획
  2.2 사용재료
  2.3 실험방법
 3. 실험결과 및 분석
  3.1 굳지않은 콘크리트의 특성
  3.2 모의 부재 온도이력 특성
  3.3 압축강도 특성
 4. 결론
 참고문헌

저자

• 김종 [ Kim, Jong | 정회원, (주)선엔지니어링 연구원, 청주대 석사과정 ]
• 백대현 [ Baek, Dae Hyun | 청주대학교 학사과정 ]
• 윤섭 [ Yoon, Seob | 정회원, 청주대 석사과정 ]
• 신동안 [ Shin, Dong-An | 정회원, (주)선엔지니어링 연구소장, 청주대 박사과정 ]
• 전충근 [ Jeong, Chung Keun | 정회원, (주)선엔지니어링 책임연구원, 공학박사 ]
• 한천구 [ Han, Cheon Goo | 정회원, 청주대 건축공학부 교수, 공학박사 ]

참고문헌