Abstract
The Galacopperbridge is part of the Highway A12 and exits of two parallel placed steel bridges, one for each direction, and was built in the 70s. Each bridge has a in total 5 lanes and 2 emergency lanes. The bridge is damaged by the enormous amount of (heavy) traffic and this is much more as foreseen in the design. The result is cracks in the steel plates. The huge amount of intermediate repairs should be a thing of the past. It was decided to strengthen the steel bridge with a Steel Fibre Reinforced High Strength Concrete (SFR-HSC). The starting point of the design is to place a 90 mm thin layer concrete layer directly on an intermediate layer of epoxy with gritted bauxite 3/6. This intermediate layer is the only connection between the steel bridge and the concrete pavement. No other anchoring by means of dowels or anchors is used, that means the concrete pavement sticks at the steel bridge by bond! The pavement was conventionally placed by means of a slipformpaver. Unfortunate sized slabs were placed manually and due to the very stiff fresh concrete, this is a point of attention
Published Version
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