Durability of concrete implies that a concrete can withstand any harsh environment without undergoing any change in structure. IS 456-2000 has specified norms that address the issues of the durability of concrete. Usually, a concrete can stand severe environment but when certain conditions like sea water exposure or sulphate and chloride attack is encountered with concrete then it becomes difficult for concrete to withstand such exposures. In such cases, along with concrete certain additives like accelerators or admixtures are required to add with concrete to make it durable. All these will be discussed in details here.