Lime fly ash stabilized soil is the most widely used stabilized soil in lime industry, and its characteristics are typical in lime industry stabilized soil. The early strength of lime-fly ash stabilized soil is low, which increases with the increase of age and is closely related to curing temperature. When the temperature is lower than 4℃, the strength hardly increases. The more fly ash is used in lime industry, the lower the early strength and the greater the strength growth in three months.

Lime-fly ash stabilized soil also has obvious shrinkage characteristics, but it is smaller than cement soil and lime soil, and it is also forbidden to be used as the base of high-grade pavement, and can only be used as the subbase. Lime-fly ash stabilized granular materials can be used as base and subbase of high-grade pavement.