Rapid hardening cement is similar to Ordinary Portland cement but with higher tri-calciumsilicate (C3S) content and finer grinding. It gains strength more quickly than OPC, though the final strength is only slightly higher. This type of cement is also called as High-Early Strength Portland Cement. The one-day strength of this cement is equal to the three-day strength of OPC with the same water-cement ratio. Following are the advantages and uses of the rapid hardening portland cement: ● It is used where formwork has to be removed as early as possible in order to reuse it. ● It is used where high early strength is required. ● It is generally used for constructing road pavements, where it is important to open the road to traffic quickly. ● It is used in industries which manufacture concrete products like slabs, posts, electric poles, block fence, etc. because moulds can be released quickly. ● It is used for cold weather concreting because rapid evolution of heat during hydration protects the concrete against freezing.