The client wanted the airport to be energy efficient and environment-friendly and also to have a high level of flexibility to accommodate future growth. Just as important was the layout of the structure so that passengers would be able to move around easily and find their way in such large spaces (the total surface area of the airport is 700,000 m2 which, with the 8 runways and other service areas, amounts to 1.4 million m2).
The result is a building with a radial configuration with six wings extending from the central nucleus, a large central piazza set over various levels. The aircraft land very close to this communal area in order to reduce the distance passengers have to cover: in fact, the distance between the check-in counters and boarding-gates and between the gates is never more than 600 metres, with less than 8 minutes required to cover this distance.
Various features have been included in the design of the airport structure which together will reduce CO2 emissions by 50%. A self-sufficient energy supply comes from photovoltaic panels around the perimeter of the structure, while pumps feed recovered geothermal heat into a central heating system. A water management system to collect rainwater is also part of the design and any excess water is directed into new wetlands, lakes and rivers to prevent flooding and to counteract the airport's “heat-island” effect during the summer.
COATING THE CARPARK FLOORS
The main contractor asked Mapei Technical Services for their support for a series of cutting-edge systems to be used for the road surface in the carpark of the airport’s west wing, which has more than 5,000 parking spaces, 600 of which with charging points for electric cars.
Once the concrete substrate had been thoroughly cleaned, the surface was primed by applying a coat of MAPEFLOOR I 900 two-component, epoxy binder with a roller to completely fill all the pores. A second coat of MAPEFLOOR I 900 was then applied, this time fillerized with QUARTZ 0.5 quartz sand.
A seamless surface coating of ULTRATOP ultra-fast setting, self-levelling mortar was then applied, which is used to give floor surfaces an attractive finish and high resistance to abrasion. A total of around 80,000 m2 of the carpark were coated with ULTRATOP.
This particular job was the most extensive of all the work carried out until now with this product. Its performance properties met with the full approval of the client and designers which convinced Mapei Technical Services to propose it for the next projects planned for the airports in Xiamen, Chengdu and Urumqi.