Technology Profile

Title of Product/Design/Equipment:

Redox active polymer Encapsulated Lamellar {REL} compound based Anticorrosive coating for reinforcement bars

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

Patented. Patent No: 0056NF15

Application/Uses:

Uses:
1. The anticorrosive coating system containing REL compound offers excellent corrosion protection of steel embedded in concrete.

2. Anticorrosive coating system containing REL compound repassivates the exposed steel rebar surface at pin holes and arrests the corrosion of steel rebars at these locations due to its redox property.

3. The anticorrosive coating system containing REL compound replaces the conventional toxic pigment based coatings.

4. The anticorrosive coating with REL compound resists the permeation of very high concentration of 7% NaCl even under accelerated condition.

5. The RCC specimens embedded with this newly developed anticorrosive coated rebar withstand more than 1750 hours for initiation of crack even under accelerated test condition.

Salient Technical Features including
Competing Features:

Table 1 Corrosion resistant properties of coating on rebars

Accelerated studies	Rebars studied
Accelerated studies	Uncoated rebar	Coated with REL
Time to cracking study	70 hours	1900 hours
Anodic Polarization (Tolerable limit for chloride)	180 ppm	1000 ppm
Cathodic disbondment test {Current}	490 mA	27 mA

Commercialization Status:

Yet to be Commercialised

Tech. Readiness Level:

Technology Transfer and Business Development
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