The technique of shotcrete is frequently used to repair the underside of concrete slabs and vertical surfaces without using forms.
Benefit from the expertise of Dumoulin & Associates: our applicators are certified by the American Concrete Institute (ACI).
We offer you two methods of shotcrete application:
- The dry process: the most common way to undertake repairs. The dry ingredients are mixed directly, in a hose, with the water in the spray. A perforated ring in the hose allow the ingredients to mix.
- The wet process: normally involves conventionally prepared concrete or mortar and requires a concrete pump and compressor.
Advantages of shotcrete
When the work is handled by competent workers with adequate know-how, shotcrete has many advantages:
- Execution speed
- Possibility to pause or stop the spraying at any moment (e.g.: in the case of the dry process, the ingredients only mix when they are in the spray)
- Greater flexibility to reach areas difficult to access
- Highly suitable for curved and irregular surfaces
- Eliminates the need for complex forms
- Excellent washout resistance
- Very low permeability
- Highly resistant to sulfate attacks
- Concrete structural repairs, such as bridges, viaducts, dams, reservoirs, train or metro tunnels, marine structures and multi-level parking garages
- Repair and covering of sewer pipes, storm sewers and sanitary sewers
- New constructions: slope stabilization, soil nailing, covering the walls of tunnels, pools and all other concrete constructions