| Title |
Fire Resistance Performance of High Strength Concrete Column with Hybrid Fiber Reinforcement |
| Authors |
Kim Jeong-Hoon ; Shin Yong-Seok ; Moon Keum-Hwan ; Park Chun-Geol ; Kim Jeong-Sup |
| Keywords |
Hybrid Fiber Reinforcement ; High Strength Concrete Column ; Fire Resistance Performance |
| Abstract |
This study made hybrid high-strength concrete mixed with polypropylene fiber and steel fiber to ensure ductility of high-strength reinforced concrete and prevent explosive spalling in fire. It conducted member experiment with this specimen and examined fire-resistant property of fiber on high-strength concrete, and obtained the following conclusions. As a result of fire resistance performance test of column mixed with fiber, standard specimen showed explosive spalling of 60 % compared to the total area. Hybrid fiber reinforced column showed minute crack, but not explosive spalling. In case of comparison with fire resistance time, standard specimen didn't meet standard of notification by the Ministry of Land, Transport and Maritime Affairs, but hybrid fiber reinforced column ensured 3-hour fire resistance performance of such a notification. In addition, it showed double improvement of fire resistance performance compared to standard specimen. |