Comparative Evaluation of Concrete Sealers and Multiple Layer Polymer Concrete Overlays

摘要

The report presents comparisons of initial evaluations of several concrete sealers and multiple layer polymer concrete overlays. The sealers evaluated included a solvent-dispersed epoxy, a water-dispersed epoxy, a silane, and a high molecular weight methacrylate. The multiple layer polymer overlays evaluated were constructed with two polyester resins and silica sand, two flexible epoxies and basalt aggregate, and three EP5-LV epoxies and silica sand. The report presents information on the permeability to chloride ion, the bond strength between the overlay and the base concrete, the skid number, and the cost of the sealers and overlays. The performance of the sealers and multiple layer polymer overlays will have to be evaluated for at least five years to allow for an accurate assessment of life-cycle costs.