Jin Xin, Meng Shanshan, Fu Haoxuan, Zhao Qi, Li Deli, Li Zhuolin, Yang Ye, Yang Yanhai, Zhang Jiupeng, Zhou Qingyue
School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
School of Highway, Chang'an University, Xi'an 710064, China.
Materials (Basel). 2025 Jun 11;18(12):2740. doi: 10.3390/ma18122740.
Warm-mix recycled asphalt (WMA-R) technology for reclaimed asphalt pavement (RAP) significantly reduces energy consumption and environmental pollution while maintaining the performance of asphalt mixtures. Significant progress has been made at home and abroad in evaluating the impact of regenerated asphalt mixtures on the performance of regenerated asphalt. However, the performance improvement of WMA-R depends on the effective diffusion of regenerated agents and their interaction mechanism with aged asphalt, which has not been fully studied. This paper systematically studies the diffusion characteristics of biomimetic-based warm-mix regenerant in aged asphalt and its impact on the high- and low-temperature performance of asphalt mixtures through MD and experimental verification. The results show that biomimetic-based warm-mix regenerant can significantly improve the diffusion performance of aged asphalt. Through the rutting test and low-temperature bending test, the significant improvement of the biomimetic-based warm-mix regenerant in the rutting resistance and crack resistance of asphalt mixtures was verified.
用于再生沥青路面（RAP）的温拌再生沥青（WMA-R）技术在保持沥青混合料性能的同时，显著降低了能源消耗和环境污染。国内外在评估再生沥青混合料对再生沥青性能的影响方面取得了重大进展。然而，WMA-R的性能提升取决于再生剂的有效扩散及其与老化沥青的相互作用机制，这方面尚未得到充分研究。本文通过分子动力学（MD）和实验验证，系统地研究了基于仿生的温拌再生剂在老化沥青中的扩散特性及其对沥青混合料高低温性能的影响。结果表明，基于仿生的温拌再生剂能显著提高老化沥青的扩散性能。通过车辙试验和低温弯曲试验，验证了基于仿生的温拌再生剂对沥青混合料抗车辙性能和抗裂性能的显著改善。
