随着我国高等级公路建设的迅猛发展,用作路基填筑的材料越来越多,红砂岩就是其中一种较为理想的材料,红砂岩作为路基填料有强度高、稳定性好等诸多优点。由于材料的特殊性,以前红砂岩多用于弃方或低等级道路的填筑,但在低等级道路填筑过程中也出现了很多质量问题,用在高速公路上特别少见。针对红砂岩路基的基本知识及其填筑技术作了简要的论述。 With the rapid development of high-grade highway construction in our country, red sandstone is one of the more ideal materials for embankment filling. As a subgrade filler, red sandstone has many advantages such as high strength and good stability. Due to the particularity of the materials, red sandstone was mostly used for the disposal of abandoned roads or low-grade roads. However, there are many quality problems in the filling of low-grade roads, which are especially rare on expressways. The basic knowledge of red sandstone subgrade and its filling technology are briefly discussed.