不同掺量聚氨酯改性沥青性能试验研究

Experimental Study on Properties of Polyurethane Modified Asphalt with Different Contents

摘要: 本研究聚焦于聚氨酯改性沥青，系统制备了不同掺量的改性沥青及混合料，运用多种实验手段对其高温、低温、力学及耐久性能展开全面研究。结果表明，聚氨酯的加入能显著优化沥青性能，不同掺量和制备工艺对性能影响各异。该研究为聚氨酯改性沥青在道路工程中的合理应用提供了详实的理论依据与数据支撑，有助于推动高性能道路材料的发展。

Abstract: This study focused on polyurethane modified asphalt. A series of modified asphalts and mixtures with different polyurethane contents were systematically prepared. Various experimental methods were employed to conduct a comprehensive investigation into their high-temperature, low-temperature, mechanical, and durability properties. The results indicate that the incorporation of polyurethane can significantly optimize the performance of asphalt, with different contents and preparation processes having varied effects on the properties. This research provides a detailed theoretical basis and data support for the rational application of polyurethane modified asphalt in road engineering, and it is conducive to promoting the development of high-performance road materials.