Sprayed Concrete

Contech has considerable experience in the application of dry and wet mix sprayed concrete for the repair and strengthening of damaged concrete structures. These techniques are also utilised for tunnel linings, retention of excavations and slope stabilisation.

 

The characteristics of traditional sprayed concrete can be greatly improved by the addition of polymer modifiers, silica fume, set accelerators, polypropylene and steel fibres.

 

We have a range of specialised gunite spraying equipment and trained machine operators and nozzle men to undertake a range of spraying projects.

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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