Abstract: The Environmental Homogeneous Cementsoil Mixed Pile (EHP) is a new type of cementsoil mixing pile developed from the conventional installation of soilcement mixed pile. The soilcement samples were prepared in field and laboratory, respectively. A series of permeability tests and Scanning Electronic Microscope (SEM) tests were conducted on the mixtures to investigate the effects of reinforced depth, cement content and curing environment on the permeability of EHP. The results indicate that hydraulic conductivity of EHP keeps almost unchanged with increase in the depth. The increase in the cement content and sample curing time induce a reduction in the permeability of cement soil although the overall decrease is small. For samples cured under the standard conditions, the values of permeability are usually larger that than cured in the field. But the difference in the permeability of samples cured under different environment, would decrease with the increase in the cement content.

Key words: EHP, Permeability, Curing Time, Cement Content, Curing Environment