Reexamination of Lime Stabilization Mechanisms of Expansive Clay

Abstract

For the purpose of understanding the mechanism that results from treating expansive soil with lime, a series of tests were conducted on selected Nanyang expansive clay. X-ray diffraction tests indicated that the major clay minerals of Nanyang expansive clay are a mixture of illite and smectite with some kaolinite and chlorite. The scanning electron microscope images obtained at different curing times were used to interpret the change in the microstructure and the formation of new products from the lime treated samples. The atomic absorption method was adopted to test the concentration of