INFLUENCE OF CHLORIDE SOLUTION CONCENTRATION ON DEICER SALT SCALING DETERIORATION OF CONCRETE

To analyze the influence of the chloride solution concentration on the deicer salt scaling deterioration of concrete, three concrete mixes with water-cement ratios of 0.25, 0.35, and 0.45 were prepared and cured in a saturated lime solution for 180 days. At the end of the curing period, all concrete specimens were dried at 20 deg C and 50% relative humidity for 3 weeks. For each concrete mix, a first series of specimens was resaturated with chloride solutions at various concentrations in the 0-12% range. Another series of specimens was resaturated with pure water. After a 3-week resaturation period, all concrete specimens were tested in accordance with American Society for Testing and Materials (ASTM) C 672. The specimens resaturated with a chloride solution were tested with the same solution on the surface. The specimens resaturated with water were tested with chloride solutions at different concentrations (always in the 0-12% range). In addition, the pore-structure characteristics of each concrete mix were investigated by mercury intrusion porosimetry, and low-temperature calorimetry was used to measure ice formation after the drying-resaturation treatment. The test results indicate that low chloride concentrations in the 2-4% range always produce more scaling, irrespective of the water-cement ratio. No significant difference was found between the specimens resaturated with a chloride solution and those resaturated with water. According to these results, it is the concentration of the outer solution that has the highest influence on the scaling mechanisms.

• Record URL:
  http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=642
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Marchand, J
  • Pigeon, M
  • Bager, D
  • TALBOT, C
• Publication Date: 1999-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 429-435
• Serial:
  • ACI Materials Journal
  • Volume: 96
  • 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: Cement content; Chloride content; Concrete; Deicing chemicals; Deterioration; Ice prevention; Moisture content; Porosity; Salts; Scaling (Concrete); Water cement ratio
• Subject Areas: Highways; Maintenance and Preservation; Materials; I32: Concrete; I62: Winter Maintenance;

Filing Info

• Accession Number: 00767850
• Record Type: Publication
• Contract Numbers: CMS-9796326
• Files: TRIS
• Created Date: Aug 27 1999 12:00AM