复合改性沥青混合料CMA-ARHM13路用性能研究

Research on Pavement Performance of Composite Modified Asphalt Mixture CMA-ARHM13

摘要:

针对传统SBS-SMA13沥青混合料在抗疲劳性、低温抗裂性及存储稳定性等方面的不足，研究提出了一种基于复合改性与间断半开级配设计的增强增韧型沥青混合料CMA-ARHM13。相关试验研究表明，CMA-ARHM13通过材料与结构协同设计，与SBS-SMA13相比在低温抗裂与抗疲劳性能方面具有显著优势，且高温与抗水损害性能亦能满足规范要求，可适用于复杂气候路段，特别是低温环境地区。相关研究为功能性上面层混合料设计提供了新的方案。

Abstract:

In response to the shortcomings of traditional SBS-SMA13 asphalt mixture in fatigue resistance, low-temperature crack resistance and storage stability, an enhanced and toughened asphalt mixture CMA-ARHM13 based on the composite modification and discontinuous semi-open gradation design is studied and proposed. The related experimental researches demonstrate that CMA-ARHM13, through the synergistic design of material and structure, has the significant advantages over SBS-SMA13 in low-temperature crack resistance and fatigue resistance, and its high-temperature performance and moisture damage resistance also meet the specification requirements, which is suitable for the road sections with the complex climatic conditions, particularly in low-temperature environments. The research provides a novel solution for the design of functional surface-layer asphalt mixtures.