Point of Interest:

Primers, sealants, putty, spray polyurea coatings and linings

Project:

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.