2287 Evaluation of the Expected Life and Recoating of Silane Water Repellant Treatments on Bridge Decks

Field evaluations funded by an Oklahoma Department of Transportation (ODOT) task order to evaluate the effectiveness of silane coatings on bridge decks, shows that the silane is not consistently penetrating to the target depth. Further, this material is not resisting water absorption as outlined in the ODOT specifications. Based on discussions with ODOT Materials Division Engineers, the field testing is showing that one in three bridges are failing these tests. This suggests that these coatings are not effective and this puts the long term performance of the bridge in question. While some results have been obtained with a limited number of bridges, more work is needed to investigate a larger number of bridges and evaluate the current ODOT specification. This research is timely and will assist ODOT in making sound investments in the long term performance of Oklahoma’s bridges. As a result of this research a new specification for ODOT structures will be developed. The results of this research have the potential to greatly extend the service life of bridges and therefore save the state of Oklahoma millions of dollars.

Language

• English

Project

• Status: Completed
• Funding: $113,000
• Contract Numbers:

  2287

  SPRY-0010(091)RS

• Sponsor Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Managing Organizations:

  Oklahoma Department of Transportation

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Project Managers:

  Peters, Walt

  Stephens, Teresa

• Performing Organizations:

  Oklahoma State University, Stillwater

  School of Civil & Environmental Engineering
  Stillwater, OK  United States  74078
• Principal Investigators:

  Ley, Tyler

• Start Date: 20191001
• Expected Completion Date: 20230930
• Actual Completion Date: 20230930

Subject/Index Terms

• TRT Terms: Absorptivity; Bridge decks; Coatings; Evaluation and assessment; Field tests; Service life; Silane; Specifications
• Geographic Terms: Oklahoma
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01722862
• Record Type: Research project
• Source Agency: Oklahoma Department of Transportation
• Contract Numbers: 2287, SPRY-0010(091)RS
• Files: RIP, STATEDOT
• Created Date: Nov 19 2019 11:12AM