Rapid Set® Cement is a pure hydraulic cement similar to Portland cement. The unique chemistry of Rapid Set® is produced using innovative manufacturing techniques. No chlorides, accelerators, or water reducing additives are used to achieve the unique properties of Rapid Set®. Over the past 25 years, Rapid Set® has become the#1 choice of contractors for fast setting cement and concrete repair projects. Rapid Set® is the a industry leader in fast setting hydraulic cement technology.