WHAT IS GUNITING?

What Is Guniting?

The guniting is the most effective process of repairing concrete work which has been damaged due to inferior work or other reasons. It is also used for providing an impervious layer.

The gunite is a mixture of cement and sand, the usual proportion being 1:3. A cement gun is used to deposit this mixture on the concrete surface under a pressure of about 20 to 30 N/cm2.

Guniting

What is The Procedure of Guniting?

The cement is mixed with slightly moist sand and then necessary water is added as the mixture comes out from the cement gun. A regulating valve is provided to regulate the quantity of water.

The surface to be treated is cleaned and washed. The nozzle of gun is generally kept at a distance of about 750 mm to 850 mm from the surface to be treated and the velocity of nozzle varies from 120 to 160 m/sec.

What Are The Advantages of Guniting?

Following are the advantages of guniting

  • The high compressive strength is obtained. Strength of about 56 to 70 n/mm2 at 28 days is generally obtained.
  • The high impermeability is achieved.
  • The repairs are carried out in any situation in a short time.

11 thoughts on “WHAT IS GUNITING?”

  1. Is it suitable for the sandy soil where high water pressure coming from the gaps provided between two shore piles? Pls suggest any suitable process or technique to arrest that flowing water which is entering the excavated pit.

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  2. Hi, Good morning!
    This is regarding construction of Basement- Retaining wall. Due to space constraint, temporary soil retention is proposed. The soil is Marine clay. Is Guiniting recommended on the temporary shore piles without liners so that a flat vertical face is achieved for applying water proofing and also to act as external shuttering to Retaining wall? Will guiniting remain in place given the condition of soil?

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