Ultra-Thin Polymer Concrete Overlays for Bridges MPR-1(009)

Status:  Complete
Report Date:  10/15/2012

Summary:

This project will be the implementation of the previous research evaluation done by University of Minnesota, Duluth (UMD). Initially, the evaluation included SafeLane Product on Mitchell bridges in Duluth for three years. The current evaluation includes three more products on eight more bridges statewide. The evaluation focused on the following performance characteristics: 1) Materials quality and performance quality of materials in a given system, including both the sealing material and the aggregate component; 2) Skid resistance afforded by the overlay system, evaluated by friction measurement over the first few years of service life; 3) Improved safety provided by higher friction as manifested in accident reduction at the application sites; 4) Effectiveness of the sealing component to reduce or eliminate chloride ingress into the deck as a consequence of the use of deicing chemicals; 5) Examination of issues relating to moisture trapping at the seal coat/concrete interface which may cause premature degradation of the concrete and 6) Cost/Benefit considerations as related to the above. The objectives of this investigation are to identify other high friction surface products that will provide good performance on Minnesota bridges and to recommend a method for qualifying future products. This proposal has two parts: Part1) Hire a consultant 1) To conduct a survey and collect data from other DOTs and local agencies and collect feedbacks from Mn/DOT bridge and Traffic safety staff; 2) Find any new and innovative materials and installation vehicles on the market and hire the vendor to furnish and apply epoxy and high friction aggregate on the recommended bridges and ramps by Traffic and Bridge staff; 3)Write an evaluation and recommendations base on the survey data, direct field comparison of all the products and the results of the evaluation done by UMD. Part 2) Hire UMD to continue evaluating the new products recommend in part one.

Final Deliverables:


Related Materials: