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A Study for Control of Thermal Cracking by Heat of Hydration in Subway Concrete Box Structure  

Song, Suk-Jun (서울산업대학교 철도건설공학과)
Yoo, Sang-Geon (서울산업대학교 철도건설공학과)
Park, Ji-Woong (서울산업대학교 토목공학과)
Kim, Eun-Kyum (서울산업대 건설공학과)
Publication Information
Journal of the Korean Society for Railway / v.12, no.6, 2009 , pp. 1024-1029 More about this Journal
Abstract
According to increase of massive concrete structures, Thermal crack done by heat of hydration have been increased in a process of the execution. In case of a subway concrete box structure, thickness of structures are almost over 1 meter, and penetrating crack by external restraint takes a bad effect on the durability with a water leakage and deterioration in especially concrete wall. A try of shortening a constructing period often occurs as subway is generally constructed according to a road to decrease a traffic jam. The research proposes executing method by skipping one block as a plan of shortening a constructing period and investigate an influence on thermal cracking control. Additionally, sensitivity analysis is accomplished by changing a height of a concrete wall, and concrete placing and air temperature met with a field condition.
Keywords
heat of hydration; thermal cracking; external restraint; subway concrete box structure; skipping one block of executing method;
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  • Reference
1 M. Ishikawa and T. Tanabe(1994), “Study of external restraint of mass concrete,” Thermal Cracking in Concrete at Early Ages, Proceeding of the International RILEM Symposium, pp.187-194
2 한국철도학회(2004), “수화열 발생인자가 지하철 콘크리트 구조물의 내구설계에 미치는 영향,” 한국철도학회 2004년도 추계학술대회논문집, pp.264-270
3 일본콘크리트공학협회(1986), “매스콘크리트의 균열제어지침,” pp.20-21
4 한국콘크리트학회(2004), “콘크리트표준시방서 해설,” pp.257-276
5 T. Mishima, H. Umehara, M. Yamata, and M. Nakamura(1994), “Thermal stress in full size RC box culvert,” Thermal Cracking in Concrete at Early Ages, Proceeding of the International RILEM Symposium, pp.171-178
6 한국철도학회(2007), “대기온도를 고려한 지하철 콘크리트 BOX 구조물의 수화열에 의한 온도균열제어 대책,” 한국철도학회 2007년도 추계학술대회논문집, pp.577-580
7 한국콘크리트학회(2005), “최신 콘크리트 공학,” pp.603-634
8 신희범, 김은겸, 김래현, 신치범(1994), “FEM에 의한 매스콘크리트 구조물의 온도해석 소프트웨어 개발,” 대한토목학회 1994년 학술발표회 논문집(구조분과), pp.143-146