The once well maintained Bencorrum Towers, had deteriorated to a state of total disrepair.
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The Bencorrum Towers of Durban. Image: Sika
The once well maintained Bencorrum Towers, had deteriorated to a state of total disrepair.
For thick layer concrete repairs, MonoTop-615 HB was used. This is a high build, cementitious, polymermodified, one-component repair and reprofiling mortar containing silica fume and Ferrogard corrosion inhibitors. It displays excellent thixotropic behaviour. For thin layer rendering on horizontal and vertical surfaces, MonoTop-620 was the product of choice. A cementitious pore sealer and levelling mortar containing silica fume, it provides excellent adhesion to mortars and concrete. All Sika MonoTop products are sprayable by the wet spray method and provide several advantages including adjustable consistencies, excellent workability characteristics and good mechanical strengths.
As with all high-rise buildings undergoing external renovations in densely populated areas, public safety takes priority. Since Bencorrum Towers is situated on an extremely busy street, a mere stone’ s throw from Durban’ s famous beachfront, and due to its level of dilapidation, falling debris is of major concern. To exacerbate the challenges facing the contractor, the
body corporate of Bencorrum Towers imposed a restricted working schedule; 9:00 to 15:00 Mondays to Fridays, with no work permitted on weekends and public holidays.
Every window in the block will be sealed with Sikaflex-11 FC, a one-part, moisture-curing elastic joint sealant and multi-purpose adhesive based on polyurethane. Its non-sag consistency greatly facilitates sealing of overhead and vertical joints. Solvent-free and odourless, Sikaflex-11 FC provides high quality adhesion, bubble-free curing, good mechanical resistance and importantly, high quality weathering and ageing resistance.
While before-and-after photographs of completed sections at Bencorrum Towers bear testimony to the quality and ease of application of these outstanding Sika products, the ensuing years will prove their durability and efficacy. When the project is completed, long suffering residents, who have endured years of maladministration and are now personally managing their building, will once again feel proud to reside at Bencorrum Towers.
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