Dry-Mix vs. Wet-Mix

There are two basic types of Shotcrete: Dry-mix and Wet-mix.

Because the wet-mix process generally results in less rebound, less waste has to be handled and disposed of. There is also less dust – an advantage when concrete must be shot in a confined area. Although placing techniques for both the wet and dry-mix processes are similar, our nozzle operators find it much easier to control the nozzle; instead of wrestling a jerking hose he can concentrate on shooting the right amount of material at the right spot. Even with a zero-slump mix, rebound is less than 10%.

Because forms are not required, shotcreting is a cost-effective method for repairing vertical and overhead surfaces. Advances in equipment and materials have made wet-mix shotcreting a practical repair option.

Shotcrete has repeatedly demonstrated a versatility that few construction materials can rival. For most bridges, the original concrete will require additional repairs long before the shotcrete needs repair. Properly designed, applied, and cured, our shotcrete repairs suffered little deterioration.

Commercial Shotcrete experienced and creative applicators continue to explore new applications. Sculptured Rock is another use of shotcrete. Placing expanded metal lath and rebar to form structure and shape work, color can be added in order to blend with scenery (a color chart is available upon request).