A study on Fire Resistant Segment using short fiber resin

Abstract

A fire in the current shield tunnel on a highway or railway would cause explosive spalling of concrete lining due to high temperature that mostly result in significant damages to the tunnel structure. The conventional fire protections for the tunnel structure have utilized separate ceramic panels being attached or spraying fireproof materials on the surface of the lining. However, the ceramic panels are rather costly, and the spraying induces poor working conditions. As a substitute, the concrete segments with enhanced fireproof performance have been developed by the use of short fiber resin. A series of fire tests were conducted to verify their fireproof performance. This paper mainly reports on the results of fire tests.