Tunnels

Highways and Motorways provide the most challenging environments for drainage systems. A variety of vehicle types, from cars to semi-trailers, travelling at high speeds, 24 hour a day, can impose severe stress on road surfaces. The looseness, collapse or damages of gratings can affect driving experience, or even threaten the safety of vehicles. Besides, due to high traffic flow, the inconvenience caused by road closure for drainage system maintenance should be minimized. As a result, it is particularly important to choose safe and durable products. The monolithic design is more suitable for road transverse drainage.

The surface water closure capacity of transverse drainage should be considered carefully. The reasonable porosity and pattern design will not only improve the shutoff efficiency, but also reduce the space demand of channel bodies on the road. Another factor to be considered is the channel profile, since a well-designed channel profile can significantly improve the drainage capacity and enhance the self-cleansing effect.

When using polymer concrete in tunnels, it is absolutely vital for the material to be classified as "non-flammable".

When it comes to tunnel construction, components are required to meet the highest safety requirements in accordance with the European tunnel directive 2004/54/EC and the German guidelines and regulations RABT and ZTV-ING. ACO's special polymer concrete compound conforms to these requirements. In the event of an accident, particularly where flammable liquids are concerned, leaking hazardous materials are directed along the shortest path from the road surface through the tunnel drainage into the ground and thus separated from the oxygen supply. ACO's special polymer concrete compound is the first polymer concrete that meets the A2-s1, d0 "non-flammable" fire class in accordance with DIN EN 13501-1. The exposure classes required for drainage systems in tunnels should also conform to DIN EN 206-1 and DIN 1045-2.