Study on Mechanical Properties of Cold Mix Asphalt and Recycled Asphalt Pavement Mixture

本研究聚焦于冷拌沥青(CMA)与再生沥青路面(RAP)混合材料的力学性能。通过对不同沥青乳液掺量(2%~4%)的CMA-RAP混合料进行多种实验测试，包括回弹模量、间接拉伸强度、车辙和疲劳试验，分析其在不同养护时间和干湿条件下的性能表现。结果表明，4%沥青乳液掺量的混合料综合性能最佳，增加沥青乳液掺量可提高抗车辙和抗疲劳能力。本研究为CMA-RAP混合料在道路工程中的应用提供了重要参考，有助于推动环保经济型沥青路面材料的发展。This study focuses on the mechanical properties of cold mix asphalt (CMA) and recycled asphalt pavement (RAP). The CMA-RAP mixture with different asphalt emulsion content (2%~4%) was tested by a variety of experiments, including resilience modulus, indirect tensile strength, rut and fatigue tests, to analyze its performance under different curing time and dry and wet conditions. The results show that the mixture with 4% asphalt emulsion content has the best comprehensive performance, and increasing the asphalt emulsion content can improve the rutting resistance and fatigue resistance. This study provides an important reference for the application of CMA-RAP mixture in road engineering, which is helpful to promote the development of environmentally friendly and economical asphalt pavement materials.