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An Experimental Study on the Thermal Property of Concrete under the Load Ratio Condition in Fire  

Kim, Hyung-Jun (한국건설기술연구원)
Kim, Heung-Youl (한국건설기술연구원)
Park, Kyung-Hun (한국건설기술연구원)
Ahn, Chan-Sol (한국건설기술연구원)
Kwon, Ki-Hyuk (서울시립대학교)
Publication Information
Fire Science and Engineering / v.24, no.3, 2010 , pp. 145-151 More about this Journal
Abstract
The fire in tunnel, when failed to extinguish at early stage, tends to easily develop to high temperature and spread to entire area of the tunnel because of considerable level of fire load and smoke control facility within the tunnel, resulting in severe damage to the people and tunnel structure. This study was intended to carry out the fire test with MHC fire curve, a scenario, which has the most rapid fire rise, on assumption of load ratio of 1, 20, 40, 60 and 70%, so as to identify the thermal characteristics of the concrete against spalling and the range of fire damage. The specimen was small scale sample as defined by EFNARC and the mixing ratio was based on 24 MPa, which is considered to be the normal strength. As a result of test, 16mm spalling was occurred on the lining under the non-load condition, while no spalling was occurred with 20% and 40% of load ratio. In case of 60% of load ratio, 24 mm of spalling was occurred and it failed in 10 minutes after heating in case of 70% load condition.
Keywords
Concrete; Load ratio; MHC fire; Fire damage range; Spalling;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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