The Indian Standard IS 456 - 2000 recommends that curing duration of concrete must be at least 7 days in case of ordinary Portland Cement, at least 10 days for concrete with mineral admixtures or blended cements are used. It also recommends that the curing duration should not be less than 10 days for concrete exposed to dry and hot weather conditions and 14 days for concrete with mineral admixtures or blended cement in hot and dry weather.