- Volume 17 Issue 5
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Early Strength Development of Concrete Cured with Microwave Heating Form
마이크로웨이브 발열거푸집을 적용한 콘크리트의 조기강도 발현특성
- Koh, Tae Hoon (Korea Railroad Research Institute) ;
- Hwang, Seon Keun (Korea Railroad Research Institute) ;
- Moon, Do Young (Dept. of Civil Engineering, Kyungsung University) ;
- Yoo, Jung Hoon (JinYin.CO.Ltd.) ;
- Song, Jin Woo (Korea Railroad Research Institute) ;
- Ko, Ji Soo (Korea Railroad Research Institute)
- Received : 2014.05.21
- Accepted : 2014.09.26
- Published : 2014.10.31
Technologies for rapid concrete curing using elevated temperature are important for saving cost and time when constricting concrete structures. Recently, a microwave heating form was developed. In this study the early strength of concrete cured by the developed form was experimentally investigated. Large scale mock up tests were conducted six times, and the results were analyzed based on the maturity theory. Logarithmic correlation curves were generated based on the measured strength and estimated maturity. It was confirmed that the strength development of the concrete cured by microwave heating form can be estimated by the equivalent age theory usually applied to steam-curing technology. By using the microwave heating form, one day at most is enough to get the required strength for the safe removal of forms, even in cold weather.
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