PREVENTING POND BANK EROSION WITH CONCRETE CANVAS

The Golden Bay Cement facility, located at Portland on the western side of Whangarei Harbour in Northland, New Zealand, contains a water storage pond. The prevailing winds are a problem for the exposed pond embankment whose shoreline does not have much in the way of soil stabilisation cover. Wind induced waves have been eroding the banks adversely affecting three sides of the pond.

A non-structural shotcrete application, initially considered, was found to be expensive. Concrete Canvas CC5 (Type I) thick waveband was suggested as a cost-effective solution that offers long-life protection against erosion of the exposed embankments.

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