Nearly two decades after the first papers describing the relationship between sacrificial anodes and corrosion rates were released, Impressed Current Cathodic Protection (ICCP) systems have been introduced to masonry restoration industry and are becoming a more common part of complete rehabilitation programs. ICCP has proven itself across many applications as a long-term solution to maintaining the condition of existing corroded steel and brings value to building owners by maintaining and extending the service life of embedded steel via electrochemical corrosion mitigation.
Over 18 months, Central Building & Preservation successfully managed and surgically installed a 10,000+ anode ICCP system within the flying buttresses and screen walls of the historic 1925 neo-Gothic skyscraper, Tribune Tower. This non-invasive strategy was chosen in lieu of complete removal and reinstallation of the limestone façade, exposing and then replacing the corroded embedded steel. Securing project feasibility, providing cost savings to the stakeholders, and preserving the well-known architectural features of the building, ICCP will continue to be integrated into masonry restoration in the future.
Central has also utilized Cathodic Protection with the use of sacrificial anodes in concrete restoration projects