Abstract: In order to explore the effects of the degree of compaction, lime content, curing age and water content on the strength characteristics of lime mixed Suqian clay samples, the lime mixed soil samples are prepared and tested. Usually, the lime mixed soil sampled was prepared under the laboratory standard curing conditions for 7 days and tested for the unconfined compressive strength. The factors such as, void ratio in the mixed sample, lime content and sample moisture content, on the unconfined compressive strength are studied. The experimental results show that the unconfined compressive strength of lime mixed soil sample increases linearly with the increase of degree of compaction, increases approximately linearly with the increase of lime content, and increases differently with the curing age. While the change of water content does not have a significant effect on the unconfined compressive strength of the lime mixed soil. In this paper, a comprehensive characterization parameter that can comprehensively reflect the influence of the degree of compaction, lime content and curing age on the strength of the lime mixed soil is proposed, which a certain engineering significance.

Key words: Lime Mixed Soil, Degrees of Compaction, Lime Content, Curing Age, Empirical Strength Formula