Award of Excellence: Transportation Category
Repair of Crib Point Jetty
Submitted by MBT Australia Pty Limited
Toll Geelong Port
Geelong, Victoria, Australia
Maunsell McIntyre Pty Limited
Melbourne, Victoria, Australia
Rozelle, New South Wales, Australia
MBT Australia Pty Limited
Oakleigh, Victoria, Australia
Highlighting the benefits of advanced concrete repair and protection material technology, the recently completed repairs to the Crib Point Jetty incorporated the use of a truly innovative shotcrete repair mortar, which features a state-of-the-art corrosion inhibitor.
Located in Westernport Bay Victoria, Australia, the Crib Point Jetty is a concrete pier and beam structure which incorporates an "Approach way Arm" section, together with two "Jetty Head" sections. A detailed maintenance inspection of the structure uncovered substantial spalling. Cracking and degradation of many of the concrete piers and beams along the "Jetty Head #1" and "Approach way Arm" sections of the structure. As expected, the survey demonstrated that this damage had been caused by significant corrosion to the structure's steel reinforcement resulting from constant exposure to the harsh marine environment.
Following the removal of all degraded concrete and steel reinforcement, together with the integration of new reinforcement where required, repairs to the concrete were made using a shotcrete repair mortar with an integrated migrating corrosion inhibitor that reduces further occurrences of corrosion within the structure's steel reinforcement. This repair mortar provides an innovative and effective repair and protection solution to one of the concrete construction industry's most costly problems—damage caused by the corrosion of steel reinforcement.