What is polished concrete?
Concrete is a natural composite material made from an aggregate (typically rocks, river stones, and granite chips) combined with a cement binder (such as limestone and calcium sulphate) and water. For those wondering what the difference is between concrete and cement, the answer is that cement is a component of concrete: foot paths are made of concrete, not cement.
Transforming concrete into a smooth and decorative surface for flooring requires treating it with a concrete densifier, a chemical that is applied over the concrete surface to fill the pores. Once the surface is prepared and dried, it is then ground with grinding tools that get progressively finer to achieve the desired finish. Polished concrete is measured in grades and finishes: the higher the grade, the larger the exposed aggregates; similarly, the higher the finish, the shinier the polish.