摘要
通过模拟水盐环境,对沥青路面开展长期侵蚀试验,分析盐水溶液浓度、侵蚀时间、干湿循环作用及冻融循环作用对沥青路面力学性能的影响机理。结果表明:随着盐水浓度的增大和侵蚀时间的累加,沥青混合料的抗压强度、马歇尔稳定度等力学指标均表现出明显的下降趋势。干湿循环、冻融循环和盐水侵蚀的耦合作用进一步加速了沥青材料的劣化,特别是在低温条件下,盐分结晶与融化循环加剧了沥青混合料微观结构损伤,致使其力学性能进一步下降。
The long-term erosion test is carried out on asphalt pavement by simulating the water salt environment,and the influence mechanism of saline solution concentration,erosion time,dry-wet cycle action and freeze-thaw cycle action on the mechanical property of asphalt pavement is analyzed.The results show that:with the increase of saltwater concentration and the accumulation of erosion time,the mechanical indicators such as compressive strength,Marshall stability and so on of asphalt mixture show a significant downtrend.The coupling effects of dry-wet cycle,freeze-thaw cycle and saltwater erosion further accelerate the deterioration of asphalt materials,especially under the condition of low temperature.Salt crystallization and melting cycle exacerbate the microstructural damage of asphalt mixtures,leading to the further deterioration of mechanical property.
作者
孔德江
Kong Dejiang(Xian’ning Institute of National Land Spatial Planning,Xian’ning 437000,China)
出处
《北方交通》
2025年第7期47-50,共4页
Northern Communications
关键词
沥青路面
氯离子
水盐侵蚀
界面强度
性能劣化
Asphalt pavement
Chloride ion
Water salt erosion
Interface strength
Deterioration of property
