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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.

Citation status

* References for papers published after 2022 are currently being built.

This paper was written with support from the National Research Foundation of Korea.