How are ‘repairs’ to a cracked wall of column or beam carried out?


Repairs to the cracks in walls, columns or beams can be carried out by the following method given below.

  • Remove all the loose concrete completely and clean the reinforcement with wire brush.

  • Apply Rusticide by means of cotton waste swab to reinforcement.

  • After 24 hours apply a passivating coat of Polyalk Fixoprime/Cement slurry 1:1.50 proportion to the chemically de-rusted surface of steel.

  • Apply a priming cum bonding coat of Polyalk EP/Cement slurry in proportion 1:1 by weight to the concrete by brush.

  • Immediately place polymer modified mortar prepared by mixing:
         1 kg. Polyalk EP

         5 kgs. Cement (fresh)

         15 kgs. Quartz Sand (graded)

         Sufficient water to desired consistency

  •  After 15-20 minutes level the surface with steel trowel.

  • After 48 hours cure by sprinkling water 2-3 days.

  • Finish the surface with 1:4 Cement Mortar.