Implementation of new types of in-situ cast concrete safety barriers in Belgium
Concrete safety barriers are the preferred choice for different Road Authorities in Belgium, mainly for use in the median reserve. Some 10 years ago, the New Jersey type was replaced by the Step-barrier, which became then the standard solution for in-situ cast concrete barriers. The Step is still being built on some ongoing project, e.g. on the regional road N5 in Philippeville.
Today, a new transition period in the field of vehicle restraint systems is taking place. Indeed, since the revision in 2010 of part 1 and 2 of the European standard EN1317, new types of concrete safety barriers have been developed, fully complying with these new versions of the standard. Delta Bloc International introduced the EP80 type, a new in-situ-cast barrier with a containment level of H2, a working width W2 (the barrier does not move at impact however), a vehicle intrusion index VI1 and an ASI value class B.
In Belgium the in-situ cast Delta Bloc has now already been installed on 10 worksites, 1 for the rehabilitation of motorway E42 with a total installed length of 40 km and 9 smaller sites - on intersections, bridges, in a port area, etc. - with a total length of 10 km.
Next to a much lower ASI-level (1,2), resulting in a reduced impact severity for vehicle occupants during a crash, the EP80 also benefits from an increased lifetime thanks to the use of corrosion-resistant reinforcement and appropriate joint sealing.
It is clear that these modern types of concrete barriers are taking over the market, contributing to a safer road network.