Dispersion Effect of Hydration Heat in Mass Concrete Using Embedded Heat Pipe

J. Ocean Eng. Technol. 2009;23(4):85-90.

Kim Myung-Sik,Youm Chi-Sun,Baek Dong-Il

Dept. of Civil Engineering Pukyung National University,Dept. of Civil Engineering Pukyung National University,Dept. of Civil Engineering Pukyung National University

매입형 히트파이프를 이용한 매스콘크리트 수화열 분산 효과

김명식,염치선,백동일

부경대학교 건설공학부,부경대학교 건설공학부,부경대학교 건설공학부

Keywords: Mass concrete, Heat pipe, Hydration heat, Thermal index

핵심용어: 매스콘크리트, 히트파이프, 수화열, 온도균열지수

Abstract

Although most of existing hydration heat control methods show a certain degree of hydration heat control, generally, there are many problems as mentioned above. Therefore, our laboratory previously developed a hydration heat control method using an exposed heat pipe, which solves most of these problems and simultaneously displays excellent hydration heat control. Unfortunately, even this method had some problems such as the processing, transport, and assembly of heat pipes, and the surface treatment of a cut plane after pouring, and hardening concrete. Therefore, in this study, a hydration heat control method using an embedded pipe has been developed with the expectation that this method solves those problems in hydration heat control using an exposed heat pipe. As a result of the experiment, the peak temperature of ECHP and ICHP specimen about $4.5{sim}6.5^{circ}C$ than the OPC specimen and the probability of thermal cracked generated in ECHP and ICHP specimen decreased up to $13{sim}20%$. Finally, it was confirmed in this study that the hydration heat control method using an embedded heat pipe is significantly more superior and cost effective than the existing method of an exposed one.