Lignin has the effect of cementing soil mass,and rice straw fiber also has the ability to improve the shear strength of soil mass.However,there are relatively few studies on the use of lignin and straw to improve red clay.In this paper,through the consolidation undrained triaxial compression tests,the stress-strain curves of lignin-rice straw improved soil under different confining pressures and different lignin contentsare obtained.Based on these curves,the mechanical properties of the improved soil are studied,a modified Duncan-Chang model is...
