Experimental Study on Consolidation Characteristics of Mucky Clay Treated with Air-booster Vacuum Preloading
To investigate the impact of air-booster vacuum preloading on mucky clay consolidation,we conducted indoor model tests by employing conventional vacuum preloading,ventilated vacuum preloading,and air-injected vacuum preloading,respectively.Analyzing variations in soil settlement,water content,shear strength,soil particle morphology,and micro-pore structure revealed the following findings:in comparison to conventional vacuum pre-loading,soil settlement increased by approximately 5.6％and 12.3％with ventilated and air-injected vacuum pre-loading,respectively.Soil microstructure exhibited increased uniformity and density,transitioning from point con-tact to surface contact between particles.Additionally,both the diameter and quantity of soil pores evidently re-duced.Ventilated and air-injected vacuum preloading significantly augmented the shear strength of deep soil,resul-ting in a more uniform soil matrix.Notably,air-injected vacuum preloading consistently demonstrated superior con-solidation performance among the three methods,elevating deep soil shear strength by 11.2 kPa.
万方数据
维普
