Study on the Performance of Xigeda Soil with Different Lime Mixture Ratios

Aiming at Panxi area Xigeda soil with negative engineering properties, such as structure particles dispersed, small cohesion, low shear strength and encountering water expansion softening, by adding different contents of lime in Xigeda soil, through boundary moisture test, compaction test and triaxial test, the authors explore the effect of it on plastic liquid limit, maximum dry density, optimum moisture content and shear strength index modification.Then the practical engineering under the condition of the perennial rainwater role is analyzed. It is found that lime soil plastic liquid limit increases with the increase in the amount of mixing lime, and plastic limit index decreases, the optimum moisture content increases, the maximum dry density decreases, cohesion and internal friction angle first increases and then decreases. Finally, it is concluded that the best ratio of fitting the dust limestone soil with maximum shear strength is about 3∶7.