THE EFFECT OF SODIUM CHLORIDE ON WATER SORPTION CHARACTERISTICS OF ROCK AGGREGATE

Crushed carbonate aggregate from active sourhwestern Ontario quarries was tested to determine the effect of common de-icing salt on the water sorption of the rock under low and high humidity conditions, and under immersion. The sorption of the rocks was compared under normal, untreated conditions and after immersion in 3% sodium chloride solution. At 45% RH, 30 degrees C, no significant change was observed. At 98% RH, 30 degrees C, the salted rocks absorbed approximately twice the amount of water. The water intake under immersion conditions was 1.13 times greater for the salted rocks. The degree of saturation increased approximately 13%. The enhanced water content of aggregates that have been exposed to de-icing salts increases the rock's susceptibility to deterioration.

• Corporate Authors:

  AEG Executive Director

  8310 San Fernando Way
  Dallas, TX  United States  75218
• Authors:
  • Hudec, P P
  • Rigbey, S G
• Publication Date: 1976-6

Media Info

• Features: References; Tables;
• Pagination: p. 199-211
• Serial:
  • Association of Engineering Geologists, Bulletin
  • Volume: 13
  • Issue Number: 3
  • Publisher: Association of Engineering Geologists

Subject/Index Terms

• TRT Terms: Carbonate rocks; Crushed aggregates; Deicing chemicals; Moisture content; Sodium chloride; Sorption
• Uncontrolled Terms: Immersion
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00142205
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM