In 2006 CRL completed a total and in-depth structural restoration and upgrade to Gatwick Airports MSCP 1, BAA’s flagship multi-storey car park for the second largest airport in the UK.

Scope of Works:

• Concrete repairs
• Installation of Impressed Current Cathodic Protection (ICCP) system
• Application of anti-carbonation coating
• Application of an anti-slip waterproof surface coatings

All vehicle/pedestrian barriers were replaced and to further enhance safety, over 21,000m2 of anti-slip waterproof deck coatings was applied to all the deck surfaces including the colour-coded drive aisles, parking and disabled bays, pedestrian walkways and luggage trolley points. A further 250m2 of anti-slip deck coating was applied in the escape stairwells.

The lightweight decking (only 70 mm thick) required precise concrete removal and extensive temporary propping from two floors below the deck being worked on.

Wherever the chloride content and half cell potential plots indicated significant risk of corrosion activity, a combined ICCP system consisting of conductive anode paint applied to the slab soffits, and titanium ribbon anode buried in chases in the main insitu beams was installed to stop further corrosion of the embedded reinforcing steel and extend the life of the structure. Approx 8000m2 of the car parks deck surface is now protected by the ICCP system. Around 1500m2 of spalling and cracked concrete in the deck surfaces was replaced.

The parking environment has become a light and easy-to-negotiate car park that ensures swift and safe passage from entry, to parking bay and then to the Airport itself.

Client: BAA London Gatwick Airport

Project Value: £3.1m