High early concrete has a faster setting time and develops strength much earlier than standard concrete.
High early concrete allows quicker service times and access to roadways and traffic areas when repairing or replacing deteriorated pavement. One of the primary ways to minimize traffic disruption and reduce closure time is to use a concrete mixture that develops strength quickly. Road repairs demand a faster setting concrete due to the necessity for rapid lane openings to traffic.
The setting time and strength gain are delayed due to cold weather. High early concrete provides earlier finishing operations for in-place concrete. Also reducesd is the amount of time for proper curing and protection from the elements.