Xbloc - Effective ware protection for breakwaters and shores

La Nouvell Route du Littoral (NRL), Réunion

Xblocs will be used on the new coastal road (La Nouvelle Route du Littoral NRL) on the French island La Réunion in the Indian Ocean. The license agreement has been signed with a joint venture of GTOI (part of Colas), SBTPC (part of Vinci) and Vinci Construction Terrassement

The joint venture will apply 2,800 Xblocs of 4 m3  in the Reunion project. The shore protection has been designed by the French design consultant Egis, who previously also designed the Xbloc shore protection in Papeete, Tahiti. The design has been model tested in a physical model at the Danish Hydraulic Institute. Construction is expected to start soon.

Automated Xbloc Production

The Xblocs are being produced in an automated factory. The blocks are produced on carrousels which move through the factory. A robot is used to de-mould the blocks, clean and prepare the formwork. Another robot is used to fill the moulds and vibrate the concrete. The system is expected to provide constant concrete properties and it reduces the labour involvement in the block production. Find an impression of the Xbloc production method here. 

Project details

Xbloc size: 4m3
Number of Xblocs: 2800           
Design wave height: depth limited

Project milestones

First Xbloc produced: January 2015
First Xblocs placed: August 2015
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