With the advent of the 2010 Soccer World Cup and the eyes of the world focussed on South Africa, Durban’s eThekwini Municipality made the decision to renovate numerous inbound and outbound bridges in the city.

Covering a total of 27,200 m², this large contract was undertaken by two contractors due to time constraints, John Cairns Construction, who renovated the Tollgate Bridge, and Structural Maintenance Services who were responsible for the various other bridges inbound and outbound. Durban Municipality appointed Goba as project managers for all the bridges.

The chosen Sika product for this project was Sikagard-550 W Elastic ZA Concrete Grey, a one-part, plasto-elastic coating based on UV-curing acrylic dispersion with outstanding crack-bridging properties. Offering excellent resistance against weathering and ageing, and a reduced tendency to dirt pick- up and contamination, Sikagard-550 W Elastic ZA was the ideal choice not only as a short-term solution, but also for the long-term protection and enhancement of Durban’s bridges. This thixotropic liquid is permeable to water vapour, has a high diffusion resistance against CO2, and is solvent free, making it environmentally friendly.

The Tollgate Bridge project, encompassing a surface area of 3,000 m², called for the use of 95 x 20-litre containers of Sikagard-550 W Elastic ZA, while the remainder of the bridges, covering a surface of 24,200 m², called for 301 x 20 litre containers of Sikagard-550 W Elastic ZA.

With the start of the World Cup less than two months away and the profusion of bridges specified in this project, the challenge was ensuring the entire project was finished on time and to the client’s specifications. Therefore the contractors had no hesitation in choosing Sika’s airless spray method to apply Sikagard-550 W Elastic ZA, as opposed to the regular brush or roll-on methods, which would have been more labour intensive and time consuming.