| Title |
An Experimental Study on Temperature Characteristics of Precast High-Strength Concrete Depending on the Type of Cement |
| Authors |
Kim Sung-Jin ; Park Heung-Lee ; Park Hyun ; Lee Seung-Hoon ; Park Byung-Keun ; Jung Sang-Jin |
| Keywords |
Precast Concrete ; Heat of Hydration ; High Temperature History ; Steam Curing ; High-strength Concrete |
| Abstract |
As architectures have recently become high-risers and mega-structured, stable high strength products have been ensured. Accordingly, use of precast concrete accouplement has been increased in order to facilitate air compression and rationalize construction. Since external rising by the steam heating and internal rising by the accumulation of cement hydration heat for the temperature of members, precast concrete members with large cross-section used for high-rise mega-structure's columns and beams may exhibit different temperature history compared to the precast concrete members for wall and sub-floor with relatively small cross-sections. Therefore, this study aims to elucidate the characteristics of temperature history of mass concrete members cast with high-strength concrete for precast concrete application. In this study, large cross-sectional precast concrete mock-up, unit cement quantity, and temperature histories in manufacturing precast concrete member under different curing condition were inclusively investigated. Consequently this research is about the factors of different hydration temperature between the test specimen, typically used in strength management method of concrete, and the mock-up model. We could find that it has a different face. The highest temperature, temperature increment and gradient. |