Concrete submerged for 67-years in seawater has shown that low permeability concrete is highly durable to sulfate attach; however, more permeable concrete is susceptible to sulfate attack. Large concrete blocks were retrieved off the Los Angeles Harbor breakwater. Concrete blocks of size 69 in. x 69 in. x 42 in. which were retrieved were part of a test program initiated by the Corps of Engineers in 1905. Cores were tested for compressive strength and material deterioration to determine if the concrete was attacked by seawater. Results from other reports of sulfate attack on concrete are summarized. It is concluded that for long-time durability of concrete exposed to seawater, a reduced permeability and reduced alkalinity of concrete appear to be as important as low 3 CalA12O3 content of cement. There, on chemical considerations portland pozzolan cements and portland blast-furnace slag cements, of pozzolanic additions to cements should be given preference for sea structure concrete applications. /Author/

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • Mehta, P K
    • Haynes, H H
  • Publication Date: 1975-8

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00099228
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #17516 Proceeding
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM