As part of a proactive asset management strategy, Fremantle Ports engaged Freyssinet to deliver structural remediation works at the Kwinana Bulk Jetty – Berth 4 (KBB4), located in the Outer Harbour of Cockburn Sound. The scope includes critical soffit concrete repairs and the installation of a hybrid cathodic protection system to extend the lifespan of the jetty’s reinforced concrete elements.

The Kwinana Bulk Terminal, owned and operated by Fremantle Ports, is a key maritime facility supporting the import and export of commodities such as liquefied petroleum gas (LPG) and iron ore. Freyssinet’s involvement ensures the long-term durability and operational safety of this strategic infrastructure asset.

  • General Contractor
    Freyssinet Australia Pty Ltd
  • Customer/Owner:
    Fremantle Port Authority
  • Engineer
    N/A
  • Freyssinet Subsidiary
    Freyssinet Australia (WA)
  • Works period
    February 2019 - December 2021

Freyssinet Scope

  • Supplied, erected, and removed scaffold deck suspended under the jetty to enable safe access.

  • Performed soffit patch repairs with hydro-demolition to ~140mm depth to reach sound concrete and expose reinforcement.

  • Replaced deteriorated reinforcement, including all welding and fabrication.

  • Installed a hybrid cathodic protection (CP) system to prevent future corrosion.

  • Designed CP grid (600mm x 300mm, 425mm spacing) tailored to site conditions.

  • Optimised anode sizing for 85-year design life at 1mA/m², protecting up to 600mm² of steel per unit.

  • Applied concrete using a mix of form-and-pour and shotcrete methods.

  • Completed works amid ongoing shipping activity and in hazardous areas (e.g., ammonia zone).

  • Rehabilitated concrete beams with hydro-demolition, steel installation, CP, and concrete pours.

  • Installed tied-on sacrificial anodes to protect adjacent areas.

  • Used specialised micro-concrete for beam reconstruction.

  • Navigated tidal movement using suspended scaffold access beneath the jetty.

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