Crisisonomy 2023 KCI Impact Factor : 0.64
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pISSN : 2466-1198 / eISSN : 2466-1201
- https://journal.kci.go.kr/cemtp
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A Study on Fire Safety of Reinforced Concrete Beams Strengthened by FRCM
- Crisisonomy
- Abbr : KRCEM
- 2019, 15(1), pp.135-147
- DOI : 10.14251/crisisonomy.2019.15.1.135
- Publisher : Crisis and Emergency Management: Theory and Praxis
- Research Area : Social Science > Public Policy > Public Policy in general
- Received : November 9, 2018
- Accepted : December 26, 2018
- Published : January 31, 2019
Hong, Kee Nam 1, Yeon，Yeongmo 2, Su Gyu Lee 3
1충북대학교
2
3한국토지주택공사
Accredited
ABSTRACT
A concrete lining of a tunnel is spalled due to increasing internal air pressure when exposed to a prolonged fire caused by a car accident. The spalled-off concrete pieces expose steels to high temperature, which leads to their stress loss and eventually the collapse of a tunnel could be collapsed due to the deterioration of concrete and steel. Therefore, a fireproofing material should be applied to protect concrete lining and steel from high temperature. This paper selected a cementitious matrix with EVA polymer and a basalt fiber as the fireproofing materials and evaluated their fire-resistant performance by the RABT-ZTV fire loading tests using a liquefied petroleum gas(LPG). Their levels of depths are used as a test variable(20mm, 30mm or 40mm), and the interior temperatures of concrete, steel, and the cementitious matrix are obtained from embedded K-type thermocouples. Failure mechanism and thermal results of the interior concrete and cementitious matrix are discussed in detail.
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This paper was written with support from the National Research Foundation of Korea.