SBR改性沥青混合料低温稳定性研究

摘要

According to climate cold,strong ultraviolet radiation etc unique natural environment conditions in Tibet Region,four types asphalt mixture SBR-AC-16I,SBR-AC-20I,AH-AC-16I,AH-AC-20I are designed,in full consideration of aging,temperature on the performance of asphalt mix at low temperature under the condition of low temperature splitting test,focus on the analysis of SBR modified asphalt mixture performance differences between material and AH asphalt mixture.Selection of asphalt penetration ,ductility,asphalt content of three influence factors of the Grey correlation analysis,effects of different factors on the influence of low temperature stability of asphalt mixture material.%针对西藏地区气候寒冷、紫外线强烈等独特的自然环境条件，设计了 SBR -AC -16I、SBR -AC -20I、AH-AC -16I、AH-AC -20I四种类型的沥青混合料，在充分考虑老化、温度对沥青混合料低温性能影响的情况下开展低温劈裂试验，重点分析 SBR改性沥青混合料和 AH 沥青混合料之间的性能差异。选取沥青的针入度、延度、沥青含量3个影响因素进行基于灰色关联度的相关性分析，研究不同影响因素对沥青混合料低温稳定性的影响规律。