Quikrete FastSet DOT Mix is a rapid hardening, fiber-reinforced repair material pre-blended with coarse aggregates for repairs from 1 1/2” to 24” thick in roads, bridge decks and other concrete surface exposed to heavy vehicle traffic. It is formulated to provide 20 to 30 minute working time, and exceeds 3,000 PSI in 90 minutes, 4,500 PSI in three hours and more than 10,000 PSI in 28 days. For full-depth repairs greater than two inches, Quikrete FastSet DOT Mix can be extended with stone or gravel.