SPUNNER PAVILION REFURBISHMENT, MENTONE, VIC
The project for Kingston City Council involved the repair of external concrete building façade elements of the Spunner Pavilion located on the Mentone foreshore of Port Philip Bay, Melbourne. The exposed reinforced concrete columns, beams, stairs and access ramps, balcony slabs and roof deck edges all suffered from excessive chloride ion contamination which had resulted in widespread spalling, cracking and delamination.
The specification required an impressed current cathodic protection ("CP") system comprising discrete anodes for the exposed columns & beams and ribbon mesh anode strips for the balconies, access ramps & roof deck edges. Traditional breakout and concrete repair methods were specified to repair spalled concrete areas, together with the application of a hydrophobic primer and breathable waterproof acrylic protective coating system.
Before starting on site, a Project Management Plan was developed in consultation with the client and the consultant in order to set out how the key areas of safety, environmental protection, product quality and program would be managed, controlled and monitored.
Before commencing installation of the CP system, a pilot trial was constructed to confirm and fine tune anode spacings and current distribution for the five zone cathodic protection system.
A total of 575 internal anodes were installed in holes drilled in the columns, beams, access ramps and stair wells of the East and West Buildings, and 481m of slotted anode ribbon was grouted into slots cut into the slab edges and soffits. It was necessary to carry out a total of 48 m² of concrete repair before this work, and to complete the project an off-white decorative protective coating was applied to the building façade.
The project was completed in January 2006.