Permeability characteristics and structural evolution of compacted loess under different dry densities and wetting-drying cycles.

ABSTRACT: Permeability characteristics of compacted loess is always an important topic in soil mechanics and geotechnical engineering. This study explored the permeability characteristics of compacted loess under different dry densities and wetting-drying cycles, and found that as the dry density increases, the compacted loess surface became denser, the saturation permeability coefficient and saturation infiltration rate decreased. However, the wetting-drying cycle presented the opposite result. Meanwhile, the evolution of the microstructure was investigated by Scanning Electron Microscope (SEM) and Nuclear Magnetic Resonance (NMR) to explain the change of its permeability characteristics. The size of compacted loess aggregates was quantitatively analyzed by Image-Pro Plus (IPP) software. It showed

SUBMITTER: Yuan KZ 

PROVIDER: S-EPMC8238211 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature