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Polyurea Application in 2008 Olympic Stadiums -Beijing 29th

 Technical service, Training, Consulting, etc.
The 2008 Summer Olympics, officially known as the Games of the XXIX Olympiad, were a major international multi-sport event that took place in Beijing, China, from August 8 to August 24, 2008. A total of 11,028 athletes from 204 National Olympic Committees (NOCs) competed in 302 events in 28 sports; three nations participated in the Olympics for the first time. China became the 22nd nation to host the Olympic Games and the 18th to hold the Summer Olympic Games.
By May 2007, construction of all 31 Beijing-based Olympic Games venues had begun. The Chinese government also invested in the renovation and construction of six venues outside Beijing as well as 59 training centers. The largest architectural pieces to be built for the games were the Beijing National Stadium, Beijing National Indoor Stadium, Beijing National Aquatics Center, Olympic Green Convention Center, Olympic Green, and Beijing Wukesong Culture & Sports Center.

As you know, polyurea protective coatings played a major role in lots of China’s infrastructure projects surrounding the 2008 Summer Olympics.
Both protective and decorative applications are as follows:
·    China's first inter-city express railway between Beijing and Tianjin
·    National Stadium (Bird’s Nest)
·    National Aquatics Center (Water Cube)
·    Olympic Tennis Court
·    National Theatre
·    Feingtai Sports Center
Many of the spectator and audience stands of the main Olympic Stadium were sprayed with grey, green and blue polyurea in thickness at 1.5mm for decorative purposes and waterproofing protection. The total area is over 200,000 square meters. Thanks to this new technology, millions of fans can be able to enjoy this great entertainment venue well in 2008 Olympic Games.
Polyurea protective coatings and linings take the gold medal for its excellent performance and aesthetics.

Point of Interest:
?      Primers, sealants, putty, spray polyurea coatings and linings
?      Concrete audience stands coated with grey, green and blue polyurea elastomer at a thickness of 1.5mm (59 mils) for decorative and waterproofing use.
?      It is over 200, 000 square meters (2.15 million ft2).
?      Designed substrate round corners with a radius of 20 - 30mm (0.8 – 1.2 in).
?      Over 350 tons polyurea was sprayed (~85,700 gallons).
Problems & Challenges:
?      Designed round corner on audience stand stairs.
?      Anti-yellowing system for long term sunshine exposure.
Scope of Work:
?      Audience Stand with Grey, blue and green polyurea elastomer applied at 2mm (80 mils).
Site Challenges & Unforeseen Issues:
?      This project took 1.5 years to complete with temperature lower at -20°C (-4°F) and humidity higher than 95%.
?      Concrete surface were very rough and numerous defects.
Project Status:
?     The 29th Beijing Olympic Games was successfully held in these stadiums coated with polyurea elastomer.