An eco-organic ester polymer named as Aqua-Dispersing-Nano-Binder (ADNB) was used to stabilize silty clay distributed in Guangdong Province. A series of experiences such as unconfined compressive strength test

direct shear test

osmotic test

Scanning Electron Microscope test (SEM)

particle size analysis and Mercury Intrusion Porosimetry test (MIP) have been performed with different ADNB content and the variation regularity of strength

permeability and soil structure was obtained. The strength tests show that ADNB can effectively improve the soil strength which increases with the ADNB dosages and the ADNB can be fully effective after approximately 3 days of conservation of soil; ADNB can improve the structure of soils by bonding and wrapping fine particles which is summarized as “granular recombination” structure improvement mode; Osmotic test shows that the permeability coefficient of the soil increases and then decreases with the increasing ADNB dosages

and the microscopic study shows that the elastic film formed in the surface and pores of soils increases the grain-to-particle connection

thus improving the stability of the soil. ADNB provides a good substrate environment for vegetation growth by improving soil stability

structural optimization and improved soil permeability

thus can be used as ecological material for slope protection.