Effect of Glutinous Rice Slurry on Shear Strength of Lime Soil under Freeze-Thaw Cycle

Abstract

Abstract: The construction of road projects in seasonal frozen soil areas needs to protect the fragile ecological environment while mechanically modifying the soil. In this paper, the effect of glutinous rice slurry on the shear strength of lime soil under freeze-thaw cycles was studied. The characteristics of stress-strain curves, shear strength, cohesion and internal friction angle of modified soil with glutinous rice slurry under different freeze-thaw cycles (0 times, 1 times, 3 times, 6 times, 10 times) were studied by adding glutinous rice slurry with different mass concentration (0%, 2%, 4%, 6%, 8%) into lime soil (lime mass concentration was 10%). The results show that the shear strength of modified soil can be improved by adding glutinous rice slurry into lime soil, but excessive concentration of glutinous rice slurry results in reduced shear strength. When the concentration of glutinous rice slurry is 6%, the shear strength of modified soil is large. Freeze-thaw cycles lead to the decrease of shear strength of modified soil, glutinous rice slurry can reduce the strength loss of modified soil under freeze-thaw cycles. Under the action of freeze-thaw cycle, the change trends of cohesion and internal friction angle of modified soil are different. The test results provide reference for the modification of subgrade soil in seasonal frozen soil area by glutinous rice slurry.

Key words: seasonal frozen soil, glutinous rice slurry, lime, freeze-thaw cycle, direct shear test, shear strength

CLC Number:

U414

ZHANG Yang, MA Mengmeng, LIU Jiaxin, DENG Jie. Effect of Glutinous Rice Slurry on Shear Strength of Lime Soil under Freeze-Thaw Cycle[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2430-2437.

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