Cathodic Protection

Cathodic protection is still regarded as the only way of halting or controlling corrosion in steel and concrete structures.

It involves controlling the corrosion of steel through electrochemical cathodic protection.

 

Since introducing cathodic protection to New Zealand in the late 1980s, we’ve developed a great reputation for undertaking feasibility studies and designing, installing, testing, commissioning and monitoring systems using a variety of anode and control approaches.

 

Types of systems available include:

  • Impressed systems – where a current is passed through the steel to prevent corrosion.
  • Sacrificial systems – where anodes are installed against the steel.
  • Hybrid systems – a combination of the above.

Together with our global associates, we’ve been involved in more than 40 installations in New Zealand and Australia. For advice on the right system for your project contact us today.

BBR Case Studies

Auckland Downtown Ferry Building
Case Studies Cathodic Protection

Auckland Downtown Ferry Building

The Downtown Ferry Building was originally built between 1909 and 1912 to house the ferry terminal operations for the Auckland harbour.  In 1982 the building was given a classification 1 rating as a historical site and later, renovations were undertaken to improve the structure and to move the terminal operations to the new buildings on Piers 1 and 2.
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Port Road Bridge, Wellington
Case Studies Cathodic Protection

Port Road Bridge, Wellington

Port Road Bridge forms a part of the Hutt City Council roading network.  The bridge is thought to be over 50 years in age, and runs over the Waiwhetu stream adjacent to the Wellington Harbour. The bridge is a combination of cast in-situ and precast concrete, supported by pre-stressed piles.
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Kaikorai Estuary Bridge, Dunedin
Case Studies Cathodic Protection

Kaikorai Estuary Bridge, Dunedin

BBR Contech has recently installed a self-monitoring cathodic protection system on Dunedin’s Kaikoura Estuary Bridge – an important commuter link between the city and the coastal community of Brighton. BBR Contech recommended that Dunedin City Council use the system as an effective way to address significant deterioration in the bridge’s reinforced concrete, particularly in the pier heads, longitudinal beams and deck soffit.
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