TU München/Centrum Baustoffe und Materialprüfung
Non-destructive testing simulating a tunnel fire
In the event of a tunnel fire, there is hardly any possibility for the heat to escape, leading to a temperature increase to over 1,000 0C within an extremely short period. Consequently, water vapor forms inside the concrete, and the built-up pressure first expands into the voids present in the material. Above a certain threshold, however, small pieces of concrete will detach and reduce the thickness, and thus structural capacity, of the concrete.
Voids created
by molten fibers
Since 2012, new road tunnel projects have been subject to fire safety verification prior to construction. One of the...
