INFLUENCE OF RIB GEOMETRY ON STRENGTH OF EPOXY-COATED REINFORCEMENT

Deterioration of reinforced concrete structures continues to cause concern worldwide. The principal cause of deterioration is corrosion of reinforcement. Several manufacturers now supply reinforcement coated with a fusion-bonded epoxy to protect the steel in aggressive environments. The surface texture of the coating is smoother than a normal mill-scale finish and alters bond behavior of the bar. This paper reports results from a study to determine changes in strength of lap splices attributable to coating of reinforcement. It shows that rib geometry exerts a significant influence on ultimate strength of lapped joints and recommends that restrictions be placed on rib geometry of bars for coating. Subject to those restrictions, it is recommended that lap lengths be increased by 20 percent for coated bars.

Language

  • English

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Filing Info

  • Accession Number: 00674139
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 16 1995 12:00AM