The rehabilitation of transportation infrastructure has become increasingly important as aging roads, bridges, and highways see record traffic levels. Public and private infrastructure owners are faced with the daunting task of maintaining existing assets while balancing limited budgets and stakeholder expectations. The Dow Polyurethanes business has developed products designed to provide maintenance providers with polyurethane-based solutions to concrete infrastructure rehabilitation projects. In this presentation, a two-component polyurethane system designed for use as an aggregate binder in concrete rehabilitation applications such as spall repair, patching, and nosing replacement will be discussed. Best practices for selecting mineral aggregates and in-field processing will also be presented. In addition, polyurethane sealants designed specifically for use in concrete construction and rehabilitation will be highlighted.
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