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Several innovative businesses are working with new better materials to provide tunnel owners with construction elements that uses materials well suited for other more demanding industries. But are we ready to challenge the traditional materials?
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Increased quality in order to extend the constructions lifetime to 100 years and thereby avoid renovations or new construction. This is one of the the arguments for using full cast vault in road tunnels.
In some cases there is a need to fire-proof narrow tunnels or tunnels with an inner structure that can not withstand high weight. This can be solved by using fire resistant concrete that is light, do not take much space and can withstand high temperatures.
The RockDrain water-proofing concept is a special designed system for waterproofing, fireproofing, insulating and frost proofing of underground facilities and tunnels.
Water-based ceiling coating improves tunnel visibility, safety and aesthetics in the Changwon Tunnel. In this case it was important for the tunnel operator to choose tunnel finish materials that had the right reflectivity, adaptability, cleanability, durability and safety effects for the road user.
Cavidrain® is a preformed geocomposite drainage system designed to relieve water penetration and reduce hydrostatic pressure within tunnel constructions. A satisfactory tunnel design anticipates drainage needs by managing the build up of hydrostatic pressure on the waterproofing layer and by transporting water away in the tunnel invert.
The overall aim of passive systems is to contain the fire by use of protection to prevent the fire and smoke from moving from one compartment to another, delaying the collapse of the building structure or/and delaying the growth of the fire.
The road owner seek solutions that can give a light and maintenance-friendly tunnel, that also feel safe for the motorists. White coating can contribute to make the tunnel lighter. The right amount of tunnel lighting can also be used, often in a combination with lining and coating.
