NEW SOLUTION FOR PREDICTION OF CHLORIDE INGRESS IN REINFORCED CONCRETE FLEXURAL MEMBERS

This paper develops a new solution to Fick's second law for the prediction of chloride ingress (CI) in reinforced concrete (RC) members located in a marine environment. The fundamental mechanism of diffusion of chloride ions in concrete is studied. Based on a combination of Knudsen flow and viscous flow, an analytical solution is derived for the prediction of CI in concrete flexural members and is verified by experimental results. CI in concrete under different cracking conditions is also examined and compared with that predicted by the derived solution. One advantage of the derived solution is that the crack width, a basic design parameter of RC structures, is included in the prediction of CI in concrete. In addition, the derivation of the solution does not resort to any unproven assumptions.

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  • English

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  • Accession Number: 00961654
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 10 2003 12:00AM