FORMULATION OF AN EQUATION FOR SURFACE CHLORIDE CONTENT OF CONCRETE DUE TO PERMEATION OF CHLORIDE. CORROSION OF REINFORCEMENT IN CONCRETE. PAPERS PRESENTED AT THE THIRD INTERNATIONAL SYMPOSIUM ON "CORROSION OF REINFORCEMENT IN CONCRETE CONSTRUCTION", BELFRY HOTEL, WISHAW, WARWICKSHIRE, MAY 21-24, 1990

Establishment of a diagnosing technology for the deterioration of reinforced concrete structures due to salt contamination is urgent, but few analytical methods based on measured data obtained from concrete structures have been presented so far. Chloride penetration into concrete from sea water is generally understood and analysed as diffusion of chloride ion. This paper presents a new method of predicting chloride penetration into concrete based on diffusion theory. The content is as follows: (1) From chloride concentration data of concrete structures, boundary condition for diffusion equation is assumed to be a linear function of square root of the age of the structure concerned; (2) The constant coefficient for the linear function is assumed according to the environment of the structure, and (3) From the diffusion coefficient obtained from actual structures and the time dependent constant coefficient mentioned above, chloride concentration and initiation time of corrosion are predicted.(A) For the covering abstract of the conference see IRRD 831449.

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  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Uji, Kimitaka
    • Matsuoka, Yasunori
    • MARUYA, TSUYOSHI
  • Publication Date: 1990

Language

  • English

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Filing Info

  • Accession Number: 00606817
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 1-85166-487-4
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM