Quick Setting Ready Mix concrete Quick-setting concrete hardens faster than traditional types due to special material mix, ensuring rapid setting and unique attributes. Steel Fiber Ready Mix Concrete Steel fiber concrete (SFRC) = concrete + short steel fibers. Usually smooth, straight wires can be hooked/crimped. Waterproof Ready Mix Concrete Waterproof concrete is a type of concrete that is designed to resist the penetration of water. It is made with a special mix of materials that gives it its unique properties.