Christmas and Cocos Islands

ACG was engaged by the Aerodrome Operator – Toll Remote Logistics, to undertake the pavement inspection reporting for Cocos and Christmas Island airports. The works included assessment of immediate pavement rectification works to meet ICAO and CASA standards as well as longer term pavement management program to maximise the life of the asset.

• Regular site inspections to assess pavement condition
• Inspections of completed construction undertaken
• Forecast of pavement condition and maintenance plans
• Ad Hoc technical advice as needed
• Value engineering for remote location

Cocos Island
Cocos Island is a very low lying site marginally above the local water table. The site was designed for World War 2 aircraft and is currently overloaded and showing structural deterioration and fatigue. The rehabilitation works undertaken in 2012 have resulted in trapped and confined layers which expand during high rain events resulting in runway closures.

Christmas Island
This site has a not received much maintenance throughout its life and has a limestone aggregate surface material which has been gradually been released from the pavement surface in isolated patches. ACG designed the holding treatment for the surface in 2013 which was a Microsurface product by Downer and has not required maintenance. The pavement management strategy for the airport was considerate of the remote site location and low budget constraints.