Turbo Grout HP®12 is a non-shrink, non-corrosive, non-metallic cementitious grout. Turbo Grout HP12 is designed to provide a controlled, positive expansion to ensure an excellent bearing area and can be mixed from a plastic consistency to a flowable consistency. Turbo Grout HP12 develops 12,000 -14,000 psi (82.7 - 96.6 MPa) in 28 days.