Dynamic bond-driven bio-based polyurethane-modified asphalt: Preparation, performance evaluation, and self-healing behavior

Key Points

• Self-healing properties enhance the durability of asphalt, providing greater longevity in applications.
• Performance tests indicate that the bio-based polyurethane-modified asphalt shows significant improvements in flexibility and resistance to cracking.
• Evaluation utilized a combination of laboratory assessments and field tests to determine the material's properties over time.
• Results suggest that incorporating bio-based polyurethane could lead to more sustainable construction materials, benefiting environmental efforts.