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MECHANISM OF STEEL CORROSION IN CRACKED CONCRETE. 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

This research aims mainly to investigate: (1) corrosion of steel in cracked concrete, (2) effect of crack width and (3) effect of water-to-cement (w/c) ratio and cover depth. The corrosion phenomena in single-crack and multi-crack specimens were observed by electrochemical methods and visual examination. The test also included the additional variables of steel stress (crack width), w/c ratio and cover thickness. Steel at every crack of the single-crack specimens corroded. For a multi-crack specimen, there is a tendency that the widest crack in the specimen induced corrosion earliest. Consequently, corrosion at the crack delayed and suppressed corrosion at the other cracks. For cracked specimens with 20-30 mm cover depth, considering only the cracks those first induced corrosion, crack width affected corrosion at the earlier stage than at the latter stage. Finally, w/c ratio had a greater effect on corrosion in cracked specimen than cover depth.(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:
    • Suzuki, K
    • Ohno, Y
    • Praparntanatorn, S
    • Tamura, H
  • Publication Date: 1990

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00606796
  • 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