EVALUATION OF THE EFFECT OF NATURAL BRINE DEICING AGENTS ON PAVEMENT MATERIALS

Laboratory tests were conducted to analyze and compare the effects of natural brines and traditional deicing chemicals on bituminous concrete, portland cement concrete, and two types of steel. The effects of 100 freeze-thaw cycles on bituminous concrete immersed in distilled water, a sodium and calcium chloride solution, and a natural brine solution were evaluated by testing specimens for Marshall stability, flow, and weight changes. Two separate 100-cycle freeze-thaw experiments--a surface degradation test, and compressive strength and pulse velocity tests--were conducted to evaluate the effects of distilled water, a sodium and calcium chloride solution, and a natural brine solution on concrete performance. A 100-cycle wet-dry immersion test, where specimens of A-36 and SAE-1010 steel were subjected to a sodium and calcium chloride solution and a natural brine solution, was used as an accelerated corrosion test. Corrosion was measured by weight loss. In general, the effects of natural brines on bituminous concrete were no different than the effects of traditional deicing agents. In erms of the surface deterioration of portland cement concrete, natural brine performed slightly better than traditional deicing agents. Potential discoloration of concrete from brines with high iron content was indicated. The effect of natural brine on concrete compressive strength was no different from that of water or sodium and calcium chloride deicing agents. Specimens of automobile-body steel demonstrated less corrosion in natural brine than in a sodium and calcium chloride solution; however, specimens of structural steel demonstrated opposite results. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 24-31
  • Monograph Title: TRAFFIC DELINEATION, WORK-ZONE PROTECTION, AND WINTER MAINTENANCE
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00386446
  • Record Type: Publication
  • ISBN: 0309036232
  • Files: TRIS, TRB
  • Created Date: Jun 28 1984 12:00AM