Recycling Guernsey airport asphalt & concrete provides many benefits

December 21st, 2012 by States of Guernsey Public Services Department

Piles of concrete rubble in Lagan Construction's main construction compound opposite the Guernsey Airport terminal (click image to expand - ©RLLord)

Thousands of tonnes of old concrete and asphalt are being recycled as part for the essential maintenance and improvements at Guernsey Airport.

The extensive works at Guernsey airport include the complete excavation and reconstruction of all the concrete aprons outside the terminal where aircraft normally park.

Once removed, the old concrete will be crushed and reused as a base material in the new aprons.

Material excavated during the recent closures, when a 50 metre section of runway at the western end was removed, has also been recycled.

Much of it was crushed on site while this operation was being carried out, and used in the base layers of the newly reconstructed section.

The remainder has been transferred to the main construction compound, adjacent to the Guernsey Airport entrance, where a stockpile of around 2,000 cubic metres is ready to be crushed.

Gerry Prickett, Guernsey Airport Project Manager, said recycling the old material was a significant saving on the project, but has other major benefits.

“The refurbishment and resurfacing of the Guernsey runway and the reconstruction of all the apron areas requires enormous amounts of aggregates and other materials, so reusing what we already have on site has major advantages,” he said.

“Form a project perspective, there is an obvious cost benefit in reducing the amount we have to import, or source locally.”

“It reduces the amount we have to transport by road, which is another major saving, and also provides less potential for disruption.”

“There are clearly environmental benefits, from reduced transport and raw material requirements,” he said.

The Condor Vitesse ferry passes specialist aggregates, imported by Lagan Construction for refurbishing the Guernsey Airport runway, and stored temporarily on the Longue Hougue reclamation site (click image to expand - ©RLLord)

Mr Prickett said that much of the materials that have been imported for the airport refurbishment project were specialist aggregates, which have to have certain properties to provide the high specification required on the runway and aprons. These surfaces are designed to last between 15 and 30 years.

“The existing concrete and asphalt areas are at least 35 years old, and in some instances much older. They have past their useful life, which is why all this work is required, but even now the material can still be put to good use,” he said.


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