An exposed-aggregate surface is obtained by placing concrete and then removing the top layer of cement paste to uncover decorative stones
(either batched into the concrete mix or seeded onto the surface). Because of its durability and skid resistance, an exposed-aggregate finish is
ideal for most flatwork including:
Exposed aggregate concrete can almost be compared to a piece of granite or marble transformed by polishing: A plain, unremarkable surface has been stripped away to reveal the exceptional beauty lying beneath. In the case of concrete, that beauty is in the form of decorative aggregate, either natural or manufactured.
The decorative process of exposing aggregate has been around since the early 1900s, well before pattern stamping, stenciling, and decorative overlays became trendy. But this method is far from being ready for retirement. This look is here to stay and will be for decades to come.