Pile Jacketing

The robust, proven solution where concrete meets the sea.

 

We have more than 30 years’ experience with fabric bag pile jacketing and using fabric bags as a formwork in projects in New Zealand and throughout the Pacific Islands.

 

Manufactured by one of the world’s leaders in corrosion prevention and sealing technology, Denso SeaShield Marine Systems are a great complement to the products and techniques we already offer our clients. They’re particularly suited to repairing and strengthening bridge and wharf piles, whether they’re constructed of steel, concrete or timber.

 

For pile jackets a fabric formwork is used to cast a dense, high-strength concrete skin, of the right thickness and reinforcement, around the deteriorated section of each pile. The result is a robust, high-performing ‘jacket’ that will perform in the most challenging conditions.

 

Fabric forms filled with concrete are widely used to protect embankments from erosion by water.

 

Installed both above and below the water line, they can be adapted to a range of clever uses – we’ve used them as inflatable socks to seal underground pipes, to encapsulate grout for ground anchors in permeable ground, and as anti-ballast pillows for submarine pipelines.

BBR Case Studies

Toll Building, Hornby, Christchurch
Case Studies Concrete Repairs

Toll Building, Hornby, Christchurch

An existing warehouse in Anchorage Road Hornby was in the process of being vacated by logistics company Toll NZ prior to new tenants Linfox moving in. The building owner and new tenant had identified a number of locations where the existing conventionally reinforced floor slab concrete had broken up and spalled, particularly in traffic aisles and adjacent to doorways.
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University of Canterbury Registry, Christchurch
Case Studies FRP

University of Canterbury Registry, Christchurch

The BBR Contech team continues to be a key part of Canterbury’s post-earthquake repair programme. Current work includes an FRP strengthening project at the University of Canterbury’s Registry building – a 1970s, seven-storey structure that was damaged in the quakes and has since been assessed as earthquake-prone.
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Waipuna Bridge
Case Studies Post-tensioning

Waipuna Bridge

Transpower had a need to get additional power to Auckland’s Eastern suburbs and a project was initiated to run a 220 kv power line from Whitford to Otahuhu substation as part of the NAAN project. The preferred route required a crossing of the Tamaki Estuary.
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