DURABILITY OF CONCRETE TO MARINE ENVIRONMENT. IN: DURABILITY OF CONCRETE. SECOND INTERNATIONAL CONFERENCE. AUGUST 4-9, 1991, MONTREAL, CANADA. VOLUME I

The biological effects and chloride penetration studies were carried out on a 10-year concrete structre of the arch bridge on the island Krk in the North Adriatic. Concrete cores of 100 mm in diameter were drilled from three main locations of the structure and tested for chloride content at depth 1-10, 10-20 and 20-40 mm. The influence of aggressive organisms on the elements below sea level was determined. The critical zone for chloride penetration was 10 mm above sea level. The chloride content in the concrete which had a strength of 60 MPa increased exponentially near the sea level. The chloride amount is larger in concrete made at higher water and cement contents. The biological life on the concrete below sea level was massive, the value being 1300 units per m squared at a depth of about 18 m. The shell Rocellaria dubia can make depressions of 5-10 mm in diameter.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 599-608
  • Serial:
    • Volume: I

Subject/Index Terms

Filing Info

  • Accession Number: 00616150
  • Record Type: Publication
  • Report/Paper Numbers: SP 126-31
  • Files: TRIS
  • Created Date: Oct 31 1991 12:00AM