Pavemend FireROK is a high early strength, heat resistant pozzolan cement structural repair concrete mix. FireROK's unique chemistry withstands exposures to intermittent high temperature environments. It is a single component powder that is water activated. FIREROK packaged units have 30 to 45 minutes of working time and reach compressive strengths of >2,500 psi
(17.2 MPa) in 4 hours.