Exposed Aggregate consists of mix of sand, cement, water and aggregate or stone. The amount of compositions required during the mixing phase has to meet the specific needs of the project. Once compositions are mixed and ready, the cement mix will be poured and allowed to set. The spray retarder will then be applied to the cement which allows for the concrete under the surface to harden and dry, but not the surface. With the use of the water hose and broom, we wash it and scrub off the surface and by doing so we expose the internal aggregates. Hence, the the term ‘exposed aggregates’.