Abstract: A tunnel profile element is disclosed. The tunnel profile element includes a lightweight body constituted by a plurality of foam glass side wall panels and a foam glass roof panel between the plurality of side wall panels. The foam glass panels being sprayed with unbroken polyurea layer.
Abstract: The present invention disclose a tunnel profile element (10, 20A, 20) comprising a lightweight body constituted by foam glass panels sprayed with unbroken polyurea layer providing a fire resistant coating, and which is providing increased mechanical integrity of the tunnel profile element (10, 20A, 20).
Abstract: The present invention disclose a tunnel wall element comprising a lightweight body element coated with a fire resistant coating providing increased mechanical integrity of the tunnel wall element. The present invention is also related to a method of building road and railway tunnels with the lightweight coated tunnel element.