Polymer resin manufacturing and supply company, Stonhard, part of the StonCor Group, has been awarded a contract to supply the epoxy flooring at the baggage-handling facility for the new terminal at OR Tambo International Airport. The epoxy flooring system, awarded in February, involves the application of between 1 mm and 2 mm semi- and self-levelling epoxy resin.
The installation is undertaken through the use of notched rakes and spiked rollers to ensure the even spread of the epoxy over the 12 000-m2 area. Material use will vary between 12 000 ℓ and 20 000 ℓ of resin for this project. The baggage-handling area will need to withstand high traffic loads and should be easy to keep clean.
Solvent-free epoxies are used by architects, engineers and end-users, owing to the epoxies’ high-wear capabilities. The resin systems have various grades of silica fillers added, depending on final film thickness and customer requirements.
Stonhard flooring systems have also been specified for the walls and floors in the ablution facilities for Soccer City stadiums’ R1,5-billion upgrade, ahead of the 2010 FIFA World Cup. Stonhard brand manager Michael Cresswell says the decision to go with Stonhard evolved out of the company’s experience with supplying decorative systems in stadiums and conference facilities, designed to withstand the expected foot traffic for the 2010 World Cup and beyond.
The decision on the sealing of the brickwork and concrete terraces, to render them nonporous and easy to maintain, is pending. The Stonhard epoxy systems are applied by highly trained Stonhard-approved applicators. Understanding the methods of application of these flooring systems, together with the correct spread rates of the various applications to ensure dry film thicknesses and the right equipment, ensures success every time, explains Cresswell.
Another flooring system in the Stonhard range is Stonclad UT, a polyurethane-urea flooring screed designed specifically to handle thermal cycling in harsh working conditions. The Stonclad UT product is designed to handle temperatures ranging from –40 ˚C to 120 ˚C at 6-mm thickness.
During the winter months, where the temperature of the concrete floors in Gauteng can be between 4 ˚C and 5 ˚C below the ambient temperature, spillages of hot liquids in manufacturing industries cause tremendous stress through contraction and expansion of the concrete subbase, which debonds epoxy systems and tiles.
Stonclad UT, which is used to eliminate this problem, is applied to prepare concrete without using primers. The product is often used in the food and pharmaceuticals industry.
Stonhard has introduced Stonshield Stoncast, a coloured silica aggregate, power-trowelled flooring system aimed at the retail and commercial markets. Coupled with concrete installations, the power-trowelled system offers a flat, hard, seamless, decorative flooring system.
Floorshields, an approved Stonhard contractor, has completed installations of 10 500 m2 of the Stonshield Stoncast system at Pick n Pay’s new store, in Woodmead.
Cresswell says, “Since the launch of the Ston-shield Stoncast system, all the company’s forward planning and forecasts for this product, have gone out the window owing to tremendous demand.”