EFFECT OF WATER-CEMENT RATIO AND CURING ON CHLORIDE PENETRATION INTO CONCRETE EXPOSED TO MEDITERRANEAN SEA CLIMATE

The effect of water-cement ratio (w/c) and curing regime on chloride ion ingress of 20 x 20 x 12 cm concrete specimens exposed to Mediterranean Sea climate was studied. Variants included w/c of 0.4, 0.5, 0.6, and 0.75, and 1, 3, and 7 days of water curing at 30 C (86 F). Diffusion curves have been obtained from dry-drilled pulverized samples extracted in 5 mm (0.198 in.) steps after 1/2, 1, 1 1/2, 2, and 3 years of exposure. A depth of 0.4 and a 1.0 percent Cl-threshold for the different variants has been established. A linear relationship was found between threshold depth and w/c. The threshold values are linearly dependent on the curing regime after 1 year of exposure. With time, the dependence is reduced. After 3 years' exposure, no significant dependence was observed. Explanations for results obtained are offered, and the results are compared with local code requirements. Temporary recommendationbs include reducing w/c and increasing cover over reinforcing steel.

• Record URL:
  • http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=2039
• Availability:
  • Find a library where document is available. Order URL: http://www.aci-int.org/PUBS/JOURNALS/AbstractDetails.asp?srchtype=phrase&date=anytime&searchmonth=7&searchday=0&searchyear=1990&publication=Materials+Journal&volume=87&issue=4&title=EFFECT+OF+WATER%2DCEMENT+RATIO+AND+CURING+ON+CHLORIDE+PENETRATION+INTO+C&
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Jaegermann, C
• Publication Date: 1990-7

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 333-339
• Serial:
  • ACI Materials Journal
  • Volume: 87
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Chlorides; Concrete curing; Corrosion; Reinforcing steel; Seas; Water cement ratio
• Old TRIS Terms: Marine atmospheres
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00497447
• Record Type: Publication
• Report/Paper Numbers: Title No. 87-M35
• Files: TRIS
• Created Date: Sep 30 1990 12:00AM