Concrete Mine Thickener Tank Repaired with Hybrid Cathodic Protection
Ian Godson & Luke Thompson – Infracorr Consulting Pty Ltd
In November 2010 Infracorr Consulting Pty Ltd (formerly Ian Godson & Associates) was consulted to provide a repair specification to an 80m diameter coal thickener tank suffering from significant concrete deterioration issues. The 3m high tank at Curragh Coal Mine, located near Blackwater Queensland, was suffering from corrosion of the reinforcement due to chloride contamination from the treatment water in the tank, with severe spalling and delamination especially in the external launder wall. Corrosion surveys also indicated that sections of the main tank walls and the service tunnel beneath the tank were also corroding, with less visible spalling.