Cotonou, Benin
To counteract coastal erosion, new groynes were constructed east of the port of Cotonou, Benin. Both Xbloc armoured and rock armoured groynes were 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 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.
Location
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
- Hs = 3.5 m
- Number of Groynes = 5
- Size of Xblocs = 4 m3
- Number of units = 2,000
