http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
OCHP를 적용한 매스콘크리트 수화열 분산효과에 관한 실험적 연구
김명식 ( Kim Myung Sik ),김종수 ( Kim Jong Soo ),임용빈 ( Im Yong Bin ),염치선 ( Yum Chi Sun ),배원만 ( Bae Won Mahn ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
In process of the mass concrete structure, the heat of hydration may cause serious thermal cracking. In order to eliminate hydration heat of mass concrete, this paper results of hydration heat control of mass concrete using the Oscillating Capillary tube Heat Pipe(OCHP). There were the several molds which shows a difference as compared with each other. One was not equipped with OCHP. Other were laid with OCHP, and the other were laid in 100cm, and exposed out 50cm. All of them were cooled with natural air convection. The OCHP was composed of copper pipe(outer diameter : 4mm, inner diameter : 2.8mm) and heat type was non-looped type. The working fluid was R-22 and its charging ratio was 40% by volume. The core of the concrete temperature was approximately 53 °C without OCHP. But the concrete temperature with OCHP was reduced its difference in temperature with the outdoor temperature to 12~15°C. Finally we saw the index figure of the thermal crack of the structures were varied from 0.6 to 1.6.
김명식 ( Kim Myung Sik ),백동일 ( Beak Dong Ii ),염치선 ( Yum Chi Sun ),배원만 ( Bae Won Mahn ),김강민 ( Kim Kang Min ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
In process of reinforced concrete(RC) box structure, the heat of hydration may cause serious thermal cracking problems. In order to eliminate hydration heat of mass concrete, this - paper reports results of hydration heat control in mass concrete using the OCHP(Oscillating Capillary tube Heat Pipe). Recently OCHP is drawn special attention from these points of low cost as well as short construction schedule for the manufacturing of heat exchanger, flexibility, simplification and high performance. There were three RC box molds(1.2×l.2×l.2m) which shows a difference as compared with each other. One was not equipped with OCHP. While others were equipped with OCHP and these were cooled with air natural convection and spraying water respectively. The OCHP was composed of copper pipe with 12 turns(O.D : 4mm, I.D : 2.8mm). The working fluid was R-22 and its charging ratio was 30(Vo1. %). In order to analyze the distribution of temperature and index figure of thermal crack in sequential placement of mass concrete, we used HYCON of computer program. As a result of the experiment, the peak temperature decreased about 15.6 ~ 23.4 ℃ than the general specimen and the probability of thermal crack generated in mass concrete decreased up to 0%.
OCHP를 적용한 매스콘크리트 수화열 분산효과에 관한 실험적 연구
김명식(Kim Myung Sik),김종수(Kim Jong Soo),임용빈(Im Yong Bin),염치선(Yum Chi Sun),배원만(Bae Won Mahn) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
In process of the mass concrete structure, the heat of hydration may cause serious thermal cracking. In order to eliminate hydration heat of mass concrete, this paper results of hydration heat control of mass concrete using the Oscillating Capillary tube Heat Pipe(OCHP). There were the several molds which shows a difference as compared with each other. One was not equipped with OCHP. Other were laid with OCHP, and the other were laid in 100㎝, and exposed out 50㎝. All of them were cooled with natural air convection. The OCHP was composed of copper pipe(outer diameter : 4㎜, inner diameter : 2.8㎜) and heat type was non-looped type. The working fluid was R-22 and its charging ratio was 40% by volume. The core of the concrete temperature was approximately 53℃ without OCHP. But the concrete temperature with OCHP was reduced its difference in temperature with the outdoor temperature to 12~15℃. Finally we saw the index figure of the thermal crack of the structures were varied from 0.6 to 1.6.