Tunnels are important components in transportation infrastructure, especially in populated metropolis and hilly terrains. Partial or complete collapse/ failure of tunnels adversely affect the transportation network and economy, whereas accidental fire hazards may cause grave fatalities. Crashing of vehicles carrying inflammable substances in the tunnels, their collision with other vehicles, and accidents causing bursting of the fuel tanks are some of the major causes of tunnel fire, apart from electric short-circuiting inside the tunnels.

This themed (special) issue of the ICJ calls for manuscripts based on research work conducted on performance of tunnel lining materials, such as shotcrete/ concrete, fiber reinforcements etc. under elevated temperatures; damage caused to the tunnel under fire; vulnerability of tunnel linings exposed to fire scenarios, etc. Moreover, submissions related to the following broad topics are also solicited: design approaches for tunnel lining considering material behavior at elevated temperatures; fire retardants used in tunnel constructions and their performance assessment; evaluation of fire spread and severity in tunnels; fire-induced spalling of concrete in tunnels; corroded reinforcement in tunnel lining under fire; fire resilience of the tunnel infrastructure; post-fire rehabilitation methods; approaches for mitigation of fire hazard in the tunnels; computational aspects in analysis of tunnels in fire; probabilistic approaches for fire safety in tunnels, and alike. Experimental and numerical simulation works related and relevant to the theme of this special issue of the ICJ are also welcome on the aforementioned broad areas.

• Performance of tunnel lining materials, such as shotcrete/ concrete, fiber reinforcements etc. under elevated temperatures;


• Damage caused to the tunnel under fire; and


• Vulnerability of tunnel linings exposed to fire scenarios.

Dr David Lange, University of Queensland, Australia

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