Consultant – Infracorr Consulting
Contractor: Vertitech Australia Pty Ltd
Consultant – Australian Corrosion Consultants
The Twin Towers building is a 8 stories high structure and located at Summit Road, Mount Buller VIC, very spacious -bedroom apartments in a brilliant ski-in/ski-out location at the top of Bourke Street ski run.
Approximately 90 balconies were exhibiting early signs of deterioration from exposure to the elements and corrosion of the reinforcements was detected. The obvious symptoms included surface cracking, porous concrete and drummy sections caused by reinforcement corrosion. Moister ingress to the balconies and transference of moister into the apartments was also a critical aspect of the rehabilitation of all the balconies.
The rehabilitation upgrade included a detailed condition assessment of the concrete elements, diagnostic testing was performed with the intention of maintaining the concrete element and structure for a minimum 20 years. Duoguard Hybrid and Patchguard anodes were part of the solution and installed adjacent to patch repairs and the balcony edges. Access to the balconies required the building to be fully scaffolded to undertake concrete remedial patching repairs, surface preparation, corrosion control requirements and eventually the installation of a quality membrane suitable for below 0 temperatures and below.
The condition assessment was performed by Infracorr Consulting together with a detailed specification for repair for selective tender.
The Galvanic treatments installed into the parent concrete provides enhanced current distribution to the areas of steel at risk of corrosion. The system includes a quality membrane as a point to prevent ongoing moisture intrusion from the elements and the freezing condition experienced.
Vertitech Australia Pty Ltd are specialist remediation contractors chosen because of their experience and competence to remediate the concrete elements and install the Hybrid and galvanic protection. The project also experiences unseasonal rain fall and early snow falls during the project.