Responsibility of permeability of modified loess soil on microstructure

A quantitative statistics of the microstructure of loess soil modified by bentonite in various contents were conducted with scanning electron microscope and ImageJ software to study the responsibility of the permeability on pore structures.The flexible-wall permeameter test illustrated that hydraulic conduvtivity(k) of loess soil was lowered by an increasing addition of bentonite,corresponding to an elevated smaller pores.It was found that a linear relationship existed between lgk and the big an...