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M/s. Coating & Foaming Inc.- DIU

Specification for the coated rebars:

Name of the process : Cement polymer composite coating system for the corrosion protection of Reinforcing and prestressing steel.

Specifications

1. Bond strength
(The bond strength of the coated rebar in 7
days cured M20 concrete)		 : 1.2 N/mm2
2. Flexibility of the coating
(The flexibility of the coated rebar under
mandrel test)		 : Not-affected
3. Thickness of the coating : 150 + 25 microns
4. Hardness of the coating
(Pencil Hardness) 		: Passed 7 H
5. Salt spray test : Passed 1000 hrs.
6. Impressed voltage test : Passed 1 hour critical test.
7. Resistance to sulphate : 10,000 ppm.
8. Resistance to chloride
(by Anodic polarization test) 		: 10,000 ppm.
9. Shelf-life of the coated bars : 6 months
10. Resistance to UV Rays
(As per field exposure test on coated
prestressing strand) 		: Not-affected
11. Abrasion resistance
(As per ASTMD 4060/84) Using CS10 wheel
1kg load for 1000 cycles 		: weight loss 70mg
(Allowable weight-loss 100 mg)
12. Stress corrosion cracking test
(As per FIP-200 hrs test in 20% NH4CN Solution) 		: Passes