| Title |
An Experimental Study on the Physical Properties by Compressive Strength Areas of Concrete at High Temperature |
| Authors |
Kim Heung-Youl ; Seo Chee-Ho |
| Keywords |
High Strength Concrete ; Specific Heat at High Temperature ; Thermal Conductivity at High Temperature ; Thermal Elongation at ; Physical Properties Model |
| Abstract |
During the past several decades, the fire situation has been serious and fire losses are increasing with the construction of high rise buildings, which mainly results from the collapse of structure member under fire. However, the number of experimental studies on the temperature effect on concrete properties are limited in domestic. Thus, this research is to present experimental data on physical properties change and differences by strength level of concrete during heating up to 800℃. The following conclusions are drawn from this study. First of all, between 100 to 200℃, the physical properties of concrete such as mass loss, specific heat and thermal conductivity, show visible degradation, regardless of concrete strength. Second, between 300 to 600℃, the physical properties of the normal and high strength concrete show degradation continually at these temperatures. Finally, beyond 600℃, the physical properties of the normal and high strength concrete show larger degradation than the range of 20 to 600℃ due to melting and crack of the interface between aggregate and cement paste. |