Shooting concrete under pressure with hose pipe and nozzle to repair damaged concrete areas is known as _____.

Explanation:

• Guniting (also called shotcrete) is a process where concrete is sprayed under high pressure through a hose and nozzle onto a surface to repair damaged concrete areas or form new structures. It is commonly used for repairs in tunnels, dams, and retaining walls.

• The concrete is mixed with water at the nozzle, and the high velocity helps the material to bond effectively with the surface being repaired or constructed.

Key Points:

• Guniting is ideal for repairing and resurfacing existing structures.

• It is widely used in tunnel linings, pool construction, and surface treatments.

• The process allows for efficient use of labor and material in places with difficult access.

 Additional Information

Curing:

• Curing refers to the process of maintaining the moisture content and temperature of freshly placed concrete to ensure proper hydration and strength development.

• It involves methods like water spraying, using wet burlap, or applying curing compounds to prevent the concrete from drying too quickly.

• Essential for the development of the full potential strength of concrete.

Sealing:

• Sealing involves applying a protective layer on the surface of concrete to prevent water ingress, chemical damage, or wear from environmental conditions.

• Often used on pavements, driveways, and decorative concrete to enhance durability and appearance.

• Commonly involves using sealers like acrylic or epoxy-based products.

Concreting:

• Concreting is the process of placing and finishing concrete on-site to form structures such as floors, walls, and foundations.

• It involves mixing cement, water, aggregates, and other additives, followed by placing the mix into molds or frames to form the desired shape.

• It requires proper mixing, transportation, and placement to ensure the desired structural properties.