Initial situation

On Paris’ largest airport Charles de Gaulle (CDG) with more than 65 mio passengers per year each and every pavement area is continuously used by airplane traffic. Additionally, construction works and temporarily diverted taxiways constrain operations. There is hardly any time or space for repair and maintenance of deteriorated areas of the concrete pavement.


Solution and assessment

Thanks to the highly flexible application of Concretum rapid-hardening concrete Q-FLASH 2/20, concrete bays can be reconstructed as a whole or in parts. Adjacent areas are not affected and can be used for traffic without restrictions. The deteriorated old concrete is broken up smoothly and shear dowels are put in place. Using a volumetric continuous concrete batching truck Concretum rapid-hardening concrete Q-FLASH 2/20 is batched and placed just in time. Depending on bay size and required time for placing the open time of the concrete is adjusted to suit the contractor’s requirements. Already 30 minutes after placing the concrete the area can be loaded and just 4 hours after concrete batching the splitting tensile strength of the concrete reaches the required value of 3.3 MPa and can be handed back to regular airplane traffic. Due to the excellent collaboration with the contractor Socotras the repair works could be carried out within a week.

Facts

Product:
Concretum® Q-FLASH 2/20

Period:
May 2017

Client:
Aeroport de Paris (ADP)

Contractor:
Socotras, Paris

Preparation of slabs

Placement of concrete