Exposing the aggregate in concrete allows you to achieve spectacular effects at a reasonable cost because few additional materials-other than the decorative aggregate-are required. The pebble-like finish is especially well-suited for pool deck surfaces because it’s highly slip resistant. For more dramatic results, you can enhance or complement the colors and textures of the decorative aggregate by using stones in contrasting colors or by combining areas of smooth and exposed aggregate finishes. Read more at link below. https://www.concretenetwork.com/concrete/pool_decks/exposed_aggregate.htm