Cotonou, Benin

To counteract coastal erosion, new groynes will be constructed east of the port of Cotonou, Benin. Both Xbloc armoured and rock armoured groynes will be applied. The design has been done by Roche from Canada. Construction is done by Boskalis. The Xbloc project in Cotonou is the fifth project where Boskalis is involved in the placement of Xbloc armour units.

The Xbloc groynes will have a main armour of 4 m3 Xblocs. The moulds of the Xbloc project at Pointe Noire will be re-used. 3D physical model testing has been carried out at LEM in Algiers, Tunisia.


Project milestones

Start of casting
January 2013

Start of placement
February 2013

1/5 Xbloc groynes is completed
April 2013

2/5 Xbloc groynes is completed
July 2013

3/5 Xbloc groynes is completed
November 2013

4/5 Xbloc groynes is completed
December 2013

Production of Xblocs is completed
December 2013

Project completed
April 2014

Project details

3.5 m

Number of Groynes

Size of Xblocs
4 m3

Number of units

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