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Supplied, erected, and removed scaffold deck suspended under the jetty to enable safe access.
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Performed soffit patch repairs with hydro-demolition to ~140mm depth to reach sound concrete and expose reinforcement.
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Replaced deteriorated reinforcement, including all welding and fabrication.
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Installed a hybrid cathodic protection (CP) system to prevent future corrosion.
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Designed CP grid (600mm x 300mm, 425mm spacing) tailored to site conditions.
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Optimised anode sizing for 85-year design life at 1mA/m², protecting up to 600mm² of steel per unit.
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Applied concrete using a mix of form-and-pour and shotcrete methods.
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Completed works amid ongoing shipping activity and in hazardous areas (e.g., ammonia zone).
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Rehabilitated concrete beams with hydro-demolition, steel installation, CP, and concrete pours.
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Installed tied-on sacrificial anodes to protect adjacent areas.
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Used specialised micro-concrete for beam reconstruction.
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Navigated tidal movement using suspended scaffold access beneath the jetty.
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.
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General ContractorFreyssinet Australia Pty Ltd
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Customer/Owner:Fremantle Port Authority
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EngineerN/A
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Freyssinet SubsidiaryFreyssinet Australia (WA)
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Works periodFebruary 2019 - December 2021
Freyssinet Scope
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