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Chemical Sealers as Corrosion Inhibitors: Naselle River Bridge 101/24


Chem-Trete Silane sealer was applied to the prestressed girders and precast piles of the newly constructed Naselle River Bridge 101/24 in Washington State in 1984. The purpose of the experiment was to gain experience with the use of the product and to measure its effectiveness over time in preventing the intrusion of chlorides into prestressed concrete girders and precast concrete piles in marine environments.

Recent rapid chloride permeability tests and chloride testing indicate that this sealer has had little or no effect on reducing the intrusion of chlorides into the concrete.


  • Date Published: February, 1993
  • Publication Number: WA-RD 302.1
  • Last Modified: October 17, 2007
  • Authors: Tom H. Roper, Edward H. Henley.
  • Originator: Washington (State). Dept. of Transportation
  • # of Pages: 20 p., 374 KB (PDF)
  • Subject: Chlorides, Corrosion resistant materials, Environment, Girder bridges, Measures of effectiveness, Permeability, Piles (Supports), Precast concrete, Prestressed concrete, Seal coating, Sealing compounds.
  • Keywords: Sealer, seal coat waterproofing, concrete sealer, US 101.
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This abstract was last modified April 29, 2008