An exposed aggregate finish is the name given to concrete where the top layer of cement paste has been removed to reveal the aggregate. This results in an attractive, low-maintenance and slip-resistant surface
Concrete NZ outlines the process for achieving an exposed aggregate finish and provides guidance on how wash water should be managed.
Aggregates
The colours, shape and size (whether rounded or crushed) of the aggregates can be used to create a unique surface texture and appearance.