介绍了高速公路砂砾垫层的功能与要求,以砂砾垫层为例,阐述了高速公路路面垫层各施工工序流程,总结了施工技术要点,并提出了施工注意事项,可有效防治路面垫层的施工质量问题.%This paper introduces the functions and requirements of the gravel cushion on expressway, takes the gravel cushion as an example, expounds the construction process of the pavement cushion on expressway, summarizes the main points of construction technology, and puts forward the construction points for attention, which can effectively prevent and control the construction quality of the pavement cushion.
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