Exposed aggregate finish is typically produced by applying retarder to the green concrete surface and washing it the next day to exposed the aggregates. The shortcoming of this traditional approach lies in the limitations imposed by the components of the concrete mix available: type, quality and color of aggregates, color of the sand, and color of Portland cement available. In some regions ready-mix concrete with white cement might not be available, which limits the colors that can be achieved with color admixtures to dark tones only. Also the locally available coarse aggregates in the concrete will have a strong influence on the final color and appearance, even if colored aggregates are seeded into the surface of the concrete. However, with TopCrete 700 the designer is in full control: any binder color with the aggregate of your choosing, nothing else.