云南新河高速公路采用半刚性基层沥青混凝土路面结构,其中底基层和基层均采用骨架密实型水泥稳定级配碎石。底基层和基层作为路面结构的主要承重层,其质量优劣对沥青混凝土路面的长期使用性能具有重要影响。在底基层和基层的施工过程中经常会出现一些质量通病,为了提高施工质量,重点分析底基层施工中出现离析现象的成因和解决方法。 Yunnan Xinhe Expressway uses semi-rigid base asphalt concrete pavement structure, in which the base layer and the grassroots are using dense solid aggregate graded macadam. As the main bearing layer of the pavement structure, the subbase and the grassroots have an important influence on the long-term performance of the asphalt pavement. In the grassroots grassroots and grassroots construction process often appear some common quality problems, in order to improve the quality of construction, focusing on analysis of the cause of sub-base construction segregation phenomenon and solutions.