Evaluation on Spalling Properties of Specimen Size with PP Fiber and Fireproof Coating

Gyu-Yong Kim, Choong-Siek Min, Tae-Gyu Lee, Hiroyuki Miyauchi, Gyu-Yeon Park, Gwang-Jun Lee
2011 Journal of the Korea Institute of Building Construction  
High Strength Concrete (HSC) has weakness that in a fire, it is spalled and brittles. The phenomenon of spalling is made by water vapor's being confined in watertight concrete. This study is aimed to evaluate explosive spalling properties of high strength concrete with □100×100×200 mm specimen and □400×400×1500 mm column. To prevent spalling of concrete, fireproof coating and PP fiber are used. As a result, □400×400×1500 mm column was prevented spalling likes □100×100×200 mm specimen. When
more » ... ete protected failure to explosive spalling, quantity heat ratio (which fireproof coating specimen to pp fiber mixed specimen) between □100×100×200 mm and □400×400×1500 mm was maximum value at 20 minute, but difference of quantity heat ratio decreased and quantity heat ratio of each specimen is almost same at 30 minute.
doi:10.5345/jkibc.2011.11.4.353 fatcat:j42pnp2lmrhnhfus36ddkg2s4m