Wu Xia, Zhu Chunfeng, Wang Zhenyu, Yang Lei, Liu Fang, Chen Jianxin, Nuriddinov Khusniddin, Giyasov Shukhrat, Morozova Natalia Borisovna, Shi Wenqing, Lu Chao, Papageorgiou Anastassios, Tie Di
College of Civil Engineering, Jilin Jianzhu University, Changchun 130118, China.
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
Polymers (Basel). 2025 Jun 25;17(13):1753. doi: 10.3390/polym17131753.
While crumb rubber powder has demonstrated effectiveness in enhancing the mechanical properties of asphalt binders, its viscoelastic behavior under freeze-thaw conditions in clean water and de-icing salt, typically urban road conditions in winter, remains insufficiently explored. This study systematically investigated the microstructural evolution, compositional changes, and mechanical behavior of asphalt modified with rubber under the influence of freeze-thaw conditions in clean water and de-icing salt. The findings revealed that rubber powder incorporation accelerates the precipitation of oil, enhancing material stability in both aqueous and saline environments. Notably, asphalt containing 10% crumb rubber powder (Asphalt-10% RP) and 20% crumb rubber powder (Asphalt-20% RP) exhibit creep recovery rates 50.53% and 28.94% higher, respectively, under de-icing salt freeze-thaw cycles than under clean water freeze-thaw cycles. Therefore, in regions with extremely low temperatures and frequent snowfall, rubber powder exhibits significant research potential, providing theoretical support for the design of asphalt pavements in cold climates.
虽然橡胶粉已证明在增强沥青结合料的力学性能方面具有有效性，但其在清水和除冰盐的冻融条件下（通常是冬季城市道路状况）的粘弹性行为仍未得到充分研究。本研究系统地研究了在清水和除冰盐的冻融条件影响下，橡胶改性沥青的微观结构演变、成分变化和力学行为。研究结果表明，加入橡胶粉会加速油的析出，增强材料在水性和盐性环境中的稳定性。值得注意的是，含有10%橡胶粉（Asphalt-10% RP）和20%橡胶粉（Asphalt-20% RP）的沥青在除冰盐冻融循环下的蠕变恢复率分别比在清水冻融循环下高50.53%和28.94%。因此，在极低温和降雪频繁的地区，橡胶粉具有显著的研究潜力，为寒冷气候下沥青路面的设计提供了理论支持。
