October 15, 2025CoatingsOpen Access

Research on Aging Characteristics and Interfacial Adhesion Performance of Polyurethane-Modified Asphalt

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PU significantly enhances rutting resistance at high temperatures, improving overall mechanical performance.
Laboratory tests and simulations showed PU-modified asphalt has lower performance degradation under aging conditions.
The modification mechanism involves absorbing light fractions and forming a cross-linked network at the molecular level.
Improved asphalt–aggregate adhesion energy indicates stronger interfacial bonding through PU incorporation.

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Laboratory experiments and molecular dynamics simulations reveal polyurethane's role in improving adhesion and mechanical performance.

Wang et al. (2025) studied this question.

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