Evaluation of thin epoxy system overlays for concrete bridge decks.

PDFTech ReportFHWA/LA-86/184La. HPR Study No. 84-2CConcrete bridgesBridge decksSkid resistanceEpoxy coatingsLouisianaLouisiana Transportation Research CenterRasoulian, MasoodBurnett, CarlLouisiana Transportation Research CenterLouisiana. Dept. of Transportation and DevelopmentUnited States. Federal Highway AdministrationUS Transportation CollectionFour epoxy overlay systems were applied to concrete bridge decks in north Louisiana to evaluate their performance as skid resistant surfaces primarily and also as concrete sealers. Dural Flexolith, Poly-Carb Flexogrid, and Con/Chem Cono/Crete were placed on three separate bridge decks; sand and Dural epoxy were placed on the fourth deck. Skid tests were taken with the British Portable Tester and the E-274 Skid Trailer; sealing characteristics of each system were checked with electrical resistivity measurements.An initial evaluation determined that both Dural Flexolith and Poly-Carb Flexogrid (broadcast systems) provided very good skid resistant surfaces. The use of sand and Dural epoxy also provided a good surface for skid resistance. The mortar system (Con/chem Cono/Crete) produced low skid numbers initially