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半刚性基层沥青路面由于具有强度高、造价低、整体性及水稳定性好等优点,在我国公路建设中得到了广泛的运用;但半刚性基层在运营期间易产生干缩裂缝和低温收缩裂缝,在交通荷载和温度荷载的重复作用下,半刚性基层的这种收缩裂缝很容易扩展到沥青面层而形成反射裂缝(ReflectionCrack)。反射裂缝一旦产生,不仅影响路面的美观和行车舒适性,更重要的是大大的缩短了路面的使用寿命。通过对半刚性基层材料的性能、反射裂缝形成机理的分析,指出了防治沥青路面反射裂缝应从选择适当的材料、结合实际情况和有效的技术措施等方面着手,来防止反射裂缝的产生。
Semi-rigid base asphalt pavement has been widely used in highway construction in our country due to its advantages of high strength, low cost, good integrity and water stability. However, the semi-rigid base asphalt pavement is easy to produce shrinkage shrinkage and cold shrinkage during operation Under the repeated action of traffic load and temperature load, the shrinkage cracks in the semi-rigid base layer can easily spread to the asphalt surface to form Reflection Cracks. Reflective cracks once produced, not only affect the appearance of the road and driving comfort, more importantly, greatly reducing the service life of the road. Based on the analysis of the properties of semi - rigid base materials and the formation mechanism of reflective cracks, it is pointed out that the prevention of reflection cracks should be based on the selection of appropriate materials in combination with the actual situation and effective technical measures in the prevention and treatment of reflective cracks in asphalt pavement.