DURABILITY OF A 60-YEAR OLD REINFORCED CONCRETE PIER IN OSLO HARBOUR

During demolition of a 60 year reinforced concrete pier in Oslo harbour, a detailed investigation of the structure was carried out. The overall structural quality of the concrete was very good. However, poor frost resistance had damaged parts of the structure. Though Portland cement of high C3A content (over 9%) was used, there was little evidence of chemical attack by seawater. Originally the requirement to concrete quality was very low, 25 to 30 N/sq mm. Above water, it was corrosion of embedded steel that affected long term performance. The extent of steel corrosion varied according to the location in the structure. In the deck, approximately 25% of the steel was corroded, while the remaining steel was in excellent condition. The corroded steel was located in the most exposed parts of the deck slabs, beams, and the transition to the tremi-cast pillars. Below water, the embedded steel was in very good condition.

• Supplemental Notes:
  • Materials Performance 25 (1986), p. 18 (Feb.) [9 pp., 10 ref., 4 tab., 10 fig.]
• Authors:
  • Gjorv, O E
  • Kashino, N (Bob)
• Publication Date: 1986

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00689675
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM