SMC常温改性沥青混凝土在西藏高海拔地区公路工程中的应用前景

Application Prospect of SMC Modified Asphalt Concrete at Normal Temperature in Highway Engineering in High Altitude Areas in Tibet

为响应建设绿色公路的具体要求,通过前期设计中对"绿色公路"理念的深入研究,以"统筹资源利用、实现集约节约"为目的,从路面面层材料的路用性能研究入手,发现SMC常温改性沥青混凝土在抗沥青老化性能、低温抗开裂性能、抗水损害性能等方面表现较好,同时具有节能、低碳、环保的优点,能有效降低施工温度,实现较低温度下的摊铺与压实,提高施工进度。在面对西藏高海拔地区寒冷、气压低、紫外线强、交通荷载较轻、生态环境脆弱等条件下,SMC常温改性沥青混凝土有较好的推广和应用前景。

In response to the specific requirements of green highway construction in China,through the in-depth study on the concept of "green highway" in the preliminary design,and aiming at "overall utilization of resources and realization of intensive saving",starting from the research and comparison of pavement surface materials,it is found that SMC normal temperature modified asphalt concrete has good performance in asphalt aging resistance,low temperature cracking resistance,and water damage resistance.At the same time,it has the advantages of energy saving,low carbon and environmental protection,which can effectively reduce the construction temperature,realize the paving and compaction under the lower temperature,and improve the construction progress.The asphalt has a good application prospect under the conditions of low temperature,high air pressure,and high-altitude environment in Tibet.