目前在我国高级公路的施工中,二灰碎石基层以其强度高、耐久性好,造价较低,易于施工等优点被广泛推广和应用,但随着这种半刚性基层的施工工艺的日益成熟和完善,各种具体施工中存在的问题和缺陷也逐渐暴露出来,甚至于通车不久的新路也出现了网裂、沉陷等路面破坏,这些病害的出现,既有其它的原因(如设计、面层施工等),也有基层施工时质量控制不严的原因,对二灰碎石基层施工过程中的原材料和拌和过程这两个重要环节进行探讨。 At present, in the construction of high-grade highway in our country, the lime-fly ash base course has been extensively popularized and applied with the advantages of high strength, good durability, low cost and easy construction. However, as the construction technology of this semi-rigid base is increasingly Mature and perfect, all kinds of concrete construction problems and shortcomings are gradually exposed, and even the new road opened to traffic also appeared net crack, subsidence and other road damage, the emergence of these diseases, both for other reasons (such as design , Surface construction, etc.), but also the reasons for the poor quality control of the grass-roots construction, the two important aspects of the process of raw materials and mixing process of lime-flyash gravel base construction.