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Review of Spatting Effect on Concrete Element in Fire  

Kim, Hyung-Jun (한국건설기술연구원 화재 및 설비연구부)
Han, Sang-Hoon (한국건설기술연구원 화재 및 설비연구부)
Choi, Seng-Kwan (한국건설기술연구원 화재 및 설비연구부)
Publication Information
Fire Science and Engineering / v.21, no.2, 2007 , pp. 54-63 More about this Journal
Abstract
Concrete is generally accepted to have good inherent fire resistance. It mainly relies on the assumption that concrete has low heat-transfer characteristic and spatting does not occur during the course of a fire. However, the significant numbers of fire accidents have shown in recent years that incidence of spatting has caused sever damages to many structures. This review has systematically investigated the behaviour of concrete in fire, including phenomenon of spatting, with respect to the theorical consideration and experimental results. Explosive spatting is caused by the build-up of water vapor pressure in concrete subjected to increasing temperatures. When this pressure exceeds the tensile strength of the concrete over a fire-exposed area, explosive spatting can result in a typical temperature range between $200^{\circ}C\;and\;400^{\circ}C$. The major functions are known to be moisture content, pore pressure, load ratio, and heating regime.
Keywords
Spatting; Moisture content; Pore pressure; Load ratio; Heating regime;
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