Here, we see the ready mix truck under the batch plant, ready to receive the first mix of the day. The Cor-Tuf team is loading one yard of pre-mixed material complete with steel fiber onto the conveyor belt leading to the mixer.
The finish of both H pilings matches that of their steel forms exactly, down to the smallest detail. Because of the extremely small particle size of its primary constituents, Cor-Tuf can be fit into very small and complex areas retaining all detail of whatever it was cast against. This results in nearly limitless finishing possibilities.
This close-up shows the solid consistency of Cor-Tuf UHPC, making the beam impermeable to moisture. While the fine-grained nature of the mix allows for a variety of finishing and decorative possibilities, Cor-Tuf has 10 times the compressive strength of traditional concrete. A variety of mix techniques can result in 50,000 psi or higher.
This view “inside” the “H” shows the beam’s smooth surface. Cor-Tuf hardens within two to three hours and can be handled in eight hours following a pour. Half-strength is produced in five to seven days; full curing is obtained in 28 days. Additional strength can be achieved with increased temperature, steam, or both during curing.