혼화재료의 조합사용에 따른 매스콘크리트 모의부재의 수화열 저감공법 = Method for Hydration Heat Reduction Small Scaled of Mass Concrete Specimen Considering Combined Addition of Admixture

다국어 초록 (Multilingual Abstract)

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 (Table of Contents)

• 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