Passive fire protection measures for concrete tunnels
conference paper
executed or in the process of designing; worth mentioning are the Western Scheld tunnel (approximately 2x6.5 km), the tunnels in the Betuwe railway and the tunnels in the HSL (high velocity train) railway. The most prominent of these tunnels will be executed as bored tunnels. The Directorate-General of Public Works and Water Management (Rijkswaterstaat, denoted hereafter as RWS) requires that the structural integrity of the tunnels in highways should remain intact in the case of a -specific type of hydro-carbon- fire. Implicitly it is assumed the hazardous goods will be transported through these tunnels. With a view to protect the concrete (prevent the concrete from spalling and heating up of the reinforcement) when exposed to hydro-carbon fires, this normally results in the application of passive fire protection. Rijkswaterstaat and TNO jointly wrote a test procedure for the evaluation of such passive fire protection for concrete tunnels. The paper describes the test procedures and evaluation methods (section 1). Furthermore, results of recent research into the fire behaviour of the concrete tunnel segments for the Western Scheld tunnel will be presented (section 2).
TNO Identifier
329443
Source title
Fire Safety in Hazardous Enclosed Spaces, Vernon, France, 8-9 November, 1999
Collation
7 p.
Files
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