Selection of shotcrete for a specific application should be based on knowledge, experience and careful study of material performance. The success of shotcrete depends on proper planning and supervision, plus the skill and constant attention provided by the shotcrete machine must also be monitored. Shotcrete uses are as follows:
✅ Repair:
Shotcrete can be used to restore and repair damaged surfaces of concrete, wood or metal structures. The following examples show how shotcrete can be used in repairs:
❇️ Bridges ❇️
Shotcrete concrete can be used to rebuild bridge decks, but Kelly will be uneconomical for major repairs. However, this method is very useful in terms of technique and cost for repairing beams, columns, supports, walls and under deck.
❇️ Buildings❇️
In building repairs, shotcrete is usually used to repair damage and damage caused by fire and earthquake, strengthen walls and cover structural steel to make it fireproof. Repairing structural members by shotcrete such as beams, columns and joints is common for structures damaged by earthquakes. from the failure of concrete and reinforcement. The damaging conditions include steel corrosion, freezing and thawing, shock loading, structural discomfort, physical wear due to waves, sand, floating sand and ice, and chemical attack due to sulfates.
These problems can occur in most structures. Marine such as bridge decks, piles, cappings, beams, piers, navigation locks, retaining walls, dams, power plants and discharge tunnels. In many cases, shotcrete can be used to repair the damaged surfaces of these structures. be damaged by pitting erosion or abrasive erosion. Shotcrete repairs are useful for completing overflow surface repairs. These surfaces are often soil that can be reinforced with shotcrete and prevent the soil from falling.
✅ Underground Drill:
In most cases, shotcrete is used for underground excavations in rock; But sometimes, it is used for tunnels to improve altered, cohesionless and loose soils. Typical underground applications of shotcrete include supplementing or replacing support materials, sealing rock surfaces, directing water flow, and installing temporary supports and permanent overlays.
✅ Slit and surface protection:
Shotcrete is often used to temporarily protect stone surfaces that often deteriorate when exposed to air. Shotcrete is also used to cover surface cuts that may erode or fail over time.
Slope protection must be done properly to prevent damage from drift pressure. It is popular to use shotcrete in landfills and other sloping areas to prevent water infiltration.
✅ New Structures:
Shotcrete is not necessarily the fastest method for concreting, but in cases where the sections are thin and the scope of work is small, shotcrete can be used effectively to save time. The following describes some of the related uses of shotcrete in new construction:
❇️ Pools and Reservoirs❇️
Shotcrete is widely used for the construction of concrete swimming pools. is used Recently, large aquariums in developed countries have been built using shotcrete. , columns and other structural members are often done with shotcrete.
❇️ Arches ❇️
New construction techniques have made it possible to build shotcrete arches. These large structures are used for residential areas, storage, bridges and pipelines.
