Expected Life of Silane Water Repellant Treatments on Bridge Decks

Details

• Alternative Title:
  Expected Life of Silane Water Repellant Treatments on Bridge Decks Phase 2
• Creators:
  Ley, M. Tyler ; Moradllo, Mehdi Khanzadeh
• Corporate Creators:
  Oklahoma State University. School of Civil & Environmental Engineering
• Corporate Contributors:
  Oklahoma Department of Transportation. Materials and Research Division ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Bridge Decks Corrosion Resistance Epoxides Laboratory Studies Nondestructive Tests Sealing Compounds Service Life Silane Water Repellents
• Publication/ Report Number:
  FHWA-OK-15-05
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Oklahoma
• Edition:
  Final Report October 2013 – September 2015
• Corporate Publisher:
  Oklahoma. Department of Transportation
• Abstract:
  This report outlines the investigation of the service life of silane sealers on Oklahoma bridge decks as well as laboratory investigation of a silane sealer and a two-part sealer that uses both silane and epoxy. The performance of silanes on bridge decks was completed on 60 bridges that were in service between 5 to 20 years. Samples were taken from the travel lane and the shoulder. The work found that after 12 years that 100% of the silane applications were effective. By 15 years then only 68% were still effective and between 17 to 20 years then only 16% were still effective. The investigations suggest that abrasion was not a major deterioration mechanism; instead, deterioration from the high alkaline pore solution is suggested to be of importance. This work goes on to investigate a two-part system of silane and epoxy sealer, a silane, and then a control sample and their resistance to chloride penetration. Both sealers show improved performance over the sample with just concrete. Additionally, a new experimental technique is presented that is capable of non-destructively imaging the penetration of external fluids into paste and mortar. This test is rapid, accurate, and can be used for in-situ testing. This test method again shows that the silane investigated was effective at reducing the ingress of ions.
• Format:
  PDF
• Funding:
  2229
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:f887f0132344524e81f060bfbf614c526d8d0afb3adeb282b1737df59d1194688b77f22d18902d086f13d906b686c1044f6c5d391ff18754607b6d536a017aac
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89144/dot_89144_DS1.pdf
• File Type:
  [PDF - 2.94 MB ]