NIBuilder 33-2 Apr-May

EXTERIORS

CELEBRATING 50 YEARS IN IRELAND, FOSROC LOOKS BACK AT KEY PROJECT CASE STUDIES FROM RECENT YEARS…

StormontWharf refurbishment

A pivotal part of Belfast Docks, cruise terminal. Situated within a tidal zone, the wharf had been regularly exposed to saltwater over many years. Its structure had become severely weakened as a result of chloride ingress, causing extensive concrete and reinforcing steel degradation, resulting in concrete spalling. Stormont Wharf is used both for cargo handling and as serves as a THE SOLUTION As part of the concrete removal process, Fosroc recommended that the exposed steel work be cleaned using hydro demolition techniques, enabling removal of the defective concrete and cleaning of the steel to be undertaken in one operation. Once the steel had been cleaned, any damaged steel was replaced and all reinforcement coated with Nitoprime Zincrich Plus, which is a zinc-rich coating

providing active galvanic protection. Renderoc DS – a dry-spray applied repair mortar with low-rebound and high-build characteristics – was specified to re-instate the broken-out concrete to depths of up to 150mm (greater in patches), overhead. THE BENEFITS With close co-operation between civil engineering specialist GRAHAM’S project management team, the distributor Murdock Civils and Fosroc, a regular supply of product was delivered to the site at a rate of 20 tonnes per week, ensuring a consistent application rate over the course of the project. The Fosroc products used also provided further savings; the electrochemically active Nitoprime Zincrich primer meant that fewer reinforcing bars had to be replaced and the low rebound characteristic of Renderoc DS ensured that waste was reduced by up to 15%.

Craig Swanson T: +353(0)83 8676720 James McGuinness T: +353 (0)86 1303461 Ian Fogarty T: +353 (0)87 9718188 E: enquiryireland@fosroc.com www.fosroc.com

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