MARINE & COASTAL PROJECT
Marine Wharf Headstock Repairs
Localised concrete cancer around a headstock can expose corroded reinforcement and affect the concrete supporting the wharf deck.
- PROPERTY TYPE
- Marine wharf structure
- PROJECT VALUE
- $1.2 Million
- REPAIR SCOPE
- Headstocks and supporting beams
- ACCESS
- Underside access above water
Before & after
THE PROJECT SCOPE
What the work involves
This project focuses on the headstock: the concrete support element beneath the wharf deck. The scope considers damaged faces, edges and undersides together with the adjoining beams, where access and the extent of deterioration can vary from one face to the next.
Headstock faces & edges
Identify spalling, rust staining and concrete cover loss around the exposed reinforcement.
Undersides & beam junctions
Assess accessible soffits and adjoining support zones to establish the limits of the repair.
Reinforcement & concrete cover
Assess exposed steel and specify any required steel work before reinstating the affected concrete profile.
WATERFRONT CONDITIONS
Access & staging
Underside access above water needs to be planned for the actual headstock geometry and surrounding wharf structure. Work positioning, containment, water levels and the movement of people or vessels influence how the repair area can be reached and managed.
A COORDINATED APPROACH
Typical repair sequence
Map the headstock defects
Inspect the accessible faces, edges and underside, including the transition into supporting beams.
Confirm the repair detail
Establish the repair boundaries and obtain structural input where reinforcement loss or the condition of the support requires it.
Prepare & reinstate
A typical scope includes removing defective concrete, assessing and treating exposed steel, then rebuilding the affected faces to the specified repair detail.
Cure & check the repair
Allow for the selected system’s curing requirements and review the reinstated areas before work-zone protection is removed.
Concerned about a wharf headstock?
Tell us about the affected structure, visible damage and available access so we can discuss an inspection.
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