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Technology Profile

 

Title of Product /Design /Equipment:

  • Anticorrosive treatment for steel reinforcement rods

IPR Status Patent/ Copyright/ Trademark
secured in Indian/Abroad IPR Details:

  • Already Patented
  • 465/CAL/75 {Derusting solution},
    109897 {Phosphating jelly },
    109784167 {Inhibitor solution} and
    112440/67 {Sealing solution}

Application/Uses:

  • Uses:

  • 1. It offers higher corrosion resistance due to the inhibitors added to it.
  • 2. By using this technology, the service life of concrete structures increased by several folds.
  • 3. It does not affect the bond strength in RCC structures.
  • 4. The chemicals to be used are available indigenously.

Salient Technical Features including
Competing Features:

  • Properties of the coating:
  • Thickness : 0.3 ± 0.1 mm
  • Hardness : Rockwell superficial 40 HR 15N
  • Bonding strength : No adverse effect. In fact the strength is improved.
  • Behaviour under load : The coating starts cracking only when the steel begins to yield i.e., 2800 kg/cm 2 . Corrosion resistance of coated steel ;

  • Salt spray test : > 2000 hours.

  • Immersion in synthetic sea water: > 30 days. Immersion in 10% ammonium sulphate: >15 days.

  • Exposure at Mandapam : 6 months.

  • Exposure at Karaikudi : > 26 months

Commercialization Status:

    Commercialized