PROTECTION OF REINFORCING BARS WITH ORGANIC COATINGS

Tests on the performance of 47 different (liquid and powdered epoxy, polyyvinylchloride liquid, polypropylene powder, phenolic nitrie liquid, and zinc rich liquid coatings) showed that both epoxy and polyvinyl chloride coatings, if correctly applied, should protect steel reinforcing bars from deicing salt corrosion. However, only epoxy coated bars have acceptable bond strength to concrete. The powder epoxy coatings performed better than the liquid epoxies. The investigation program included the selection and procurement of promising coating materials, evaluation of their physicochemical durability, their protective qualities, and the determination of whether coated reinforcing bars would affect the structural integrity of concrete bridge decks. The results are detailed of more exhaustive tests on the chemical resistance of coatings, film integrity of cured coatings, physical durabilities of coating on rebars, electrochemical measurements of coated rebars immersed in sodium chloride solutions, and bond tests of coated rebars embedded in concrete.

  • Availability:
  • Corporate Authors:

    National Association of Corrosion Engineers

    P.O. Box 1499
    Houston, TX  United States  77001
  • Authors:
    • Clifton, J R
  • Publication Date: 1976-5

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Filing Info

  • Accession Number: 00135871
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 23 1976 12:00AM