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沥青路面是目前高等级公路最常用的柔性路面,它和半刚性基层(水泥稳定碎石、二灰稳定碎石)一起,组成了我国高等级公路最常用的结构形式。据统计,全国90%以上的高等级公路沥青路面基层都采用半刚性材料。它具有强度高、承载力大、良好的抗疲劳性能和抗冲刷性等优点;然而其缺点也是不容忽视的,抗变形能力差、脆性大、在温度和湿度变化时易产生开裂,最终形成路面反射裂缝。现通过裂缝产生的原因,探讨旧沥青路面、新建沥青路面裂缝的处理技术。
Asphalt pavement is the most commonly used flexible pavement of high-grade highways currently. Together with semi-rigid base (cement stabilized macadam and lime-flyash stabilized macadam), asphalt pavement constitutes the most commonly used structural form of high-grade highways in our country. According to statistics, more than 90% of the country’s high-grade highway asphalt pavement are used semi-rigid base material. It has the advantages of high strength, large bearing capacity, good anti-fatigue performance and impact resistance; however, its disadvantages are also not to be neglected. It has poor anti-deformation ability and large brittleness, and is apt to crack when the temperature and humidity are changed. Reflective cracks. Now through the causes of cracks, to explore the old asphalt pavement, asphalt pavement crack treatment technology.