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Title:

Thin Bonded Epoxy Overlays on Concrete Bridge Deck Surfaces
Cover of Thin Bonded Epoxy Overlays on Concrete Bridge Deck Surfaces

Accession Number:

01365588

Record Type:

Component

Abstract:

State Departments of Transportation are faced with a continuous problem of maintaining and replacing the wearing surfaces on bridge decks. Wearing surfaces are utilized on many bridge decks in an effort to maximize the life of the bridge deck, prevent the infiltration of water and aggressive chemicals such as chlorides from deteriorating the concrete surface and corroding the steel reinforcement. The Colorado Department of Transportation has recently begun to evaluate the performance of thin bonded epoxy overlays. This study evaluated two thin bonded epoxy overlays, SafeLane and Flexogrid. SafeLane is advertised as an anti-skid/anti-icing overlay that stores deicing chemicals for release during winter events. Flexogrid is an anti-skid overlay. These two products were compared on the basis of physical properties, including: mean texture depth, surface friction, bond strength, ability to stop chloride intrusion, and anti-icing properties, as well as traffic safety and installation cost. Mean texture depth and friction testing were shown to provide a durable wearing surface with adequate traction for both overlays. In addition, both overlays produced high bond strengths with the Flexogrid overlay showing varied failure modes. Chloride testing of the underlying concrete decks indicated that both overlays worked well to protect the bridge decks from chloride ingress. A reduction in traffic accidents was determined; however, further study is required. Final results indicate that the CDOT should consider using these thin bonded epoxy overlays to extend the service life of their bridge structures, decrease the presence of bonded ice during winter events and consequently increase traffic safety.

Supplemental Notes:

This paper was sponsored by TRB committee AHD40 Polymer Concretes, Adhesives, and Sealers

Monograph Accession #:

01362476

Report/Paper Numbers:

12-3418

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Young, Logan M
Durham, Stephan A
Bindel, Mary K

Pagination:

17p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Bridges and other structures; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-3418

Files:

PRP, TRIS, TRB

Created Date:

Feb 8 2012 5:16PM