EXPERIMENTAL STUDY OF PERMEABILITY OF REMOLDED MALAN LOESS

This paper examines the influence of dry density and initial moisture content to the remolded loess permeability. It carries out the permeability test of Malan remolded loess in I phase project of Yan'an New District. The results show that under non-saturation conditions, the time that samples take to get saturated getting longer with the increase of dry density. So the dry density influence on penetration time is most significant, but the initial moisture content is not obvious. Remolded Malan loess permeability coefficient decreases with the increase of initial water content and dry density and gradually tends to stabilize. The relationship between them can be fitted to a power function. Within a certain scope around dry density, the permeability coefficient decreases with the initial water content. Their relation curve can be coupled to a linear equation. The permeability coefficient reduces with the decrease of the void ratio. Moreover, there has a power function relationship between them. The initial moisture content, dry density and void ratio are important factors affecting the permeability of remodeling loess, which has a great influence on the micro-structure of the sample, and leads to the influences to its permeability. This study has many theoretical guidance and practical application value for the engineering construction of Yan'an New District.