二灰碎石基层具有强度高、刚度大、板体性强、稳定性好、造价较低等优点,加之目前施工工艺已日臻成熟,因而被广泛应用于高等级公路路面工程,能够发挥很好的经济效益和社会效益。然而,由于二灰碎石材料本身的特点,在温度或湿度变化的作用下容易产生收缩裂 Lime-fly-ash gravel base has the advantages of high strength, high rigidity, strong board body, good stability and low cost, and at the same time the construction technology has matured so that it is widely used in high-grade highway pavement works and can play well The economic and social benefits. However, due to the characteristics of lime-flywheel material itself, it is easy to produce shrinkage cracking under the influence of temperature or humidity