MOMBASA RING ROAD PROJECT, AFRICA

2 February 2022
Civil work

Moldtech supplies equipment in Mombasa, Africa, for the construction of road bridges using precast and post tensioned beams of the Aastho IV and Aastho VI type. Aastho IV beams are approximately 30 meters long and weigh 30 tons while Aastho VI beams come with a length of approximately 40 meters and a weight of 81 tons.

  • A cambered casting bed and special arrangement to make the mould compatible with the post tensioning operations. The total supply for these items included 400 meters of casting bed and 200 meters of mould sides. This allows the client the demould and use the sides again while the previous casted girders complete their curing process on the casting bed before their removal to the stockyard.
  • Apart from the Aastho girders moulds, the client also requested so-called plank moulds which fabricate pre-stressed hollow core deck slabs. The hollow core is achieved by inserting void formers for which Moldtech designed a special tooling to compensate the uplift force and keep these formers in place.
  • A total of 130 meters of casting bed was delivered together with 8 hinged mould sides with height of 60cm and a length of 14.7 meters.
  • The stressing head has a capacity of 435 tons and includes slackening cylinders for the de-tensioning of the strands prior to cutting them.

This project places Moldtech again in a privileged position with regards to road infrastructure after concluding a mega project last year in Romania also related to bridge construction.

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