Investigation of the Structural Strength Properties of Compacted Clayey Soil Material during the Drying Process

  • Huzhu Zhang
Keywords: Compacted clayey soil material, Structural strength, Triaxial compression test, Drying process, Water content, Degree of compaction, Confining pressure.

Abstract

In view of the structural evolution of compacted remolded soil during the drying process, a method was proposed to define the structural strength of remolded soil based on the triaxial compression test. Effect of water content, degree of compaction and confining pressure on the structural strength of the engineering clayey soil material during the drying process were investigated systematically by adopting the triaxial compression test, and the effect mechanisms were analyzed. Results show that the structural strength increases according to the law of exponential function with the decrease of water content of the compacted clayey soil material during the drying process, and increases as the law of exponential function with the increase of degree of compaction, while increases linearly with the increase of confining pressure. In addition, the structural strength has a significant increase under the same conditions when the compacted clayey soil material in the lower water content, the greater degree of compaction or the higher confining pressure. The increase of the structural strength of compacted clayey soil material during the drying process is mainly due to the increase of soil particle interaction, soil density, soil particle contacts and the soil shrinkage induced by soil’s dehydration.

Published
2020-09-24
How to Cite
Huzhu Zhang. (2020). Investigation of the Structural Strength Properties of Compacted Clayey Soil Material during the Drying Process. Design Engineering, 438 - 451. https://doi.org/10.17762/de.vi.190
Section
Articles