EXPERIMENTAL STUDY OF LOESS STRUCTURAL PROPERTIES BASED ON SOIL DEFORMATION
TIAN Kanliang1，2，ZHANG Huili3
(1. Institute of Soil and Water Conservation，Northwest A and F University，Yangling，Shaanxi 712100，China；2. Institute of Soil and Water Conservation，Ministry of Water Resources，Chinese Academy of Sciences，Yangling，Shaanxi 712100；3. College of Water Conservancy and Architectural Engineering，Northwest A and F University，Yangling，Shaanxi 712100，China)
Abstract：The mechanical properties of soil are affected by its structure，which is the intrinsic determinant of its strength and deformation. Loess is a kind of typical structural soil. Its special structure is an important reason for the occurrence of brittle fracture and collapse. The structural properties of loess is determined by link structural strength and friction structural strength；and the variation of link structural strength and friction structural strength of loess should be quantitatively studied to quantitatively describe the structural properties of loess. Therefore，some new and reasonable structural parameters of loess are proposed based on soil deformation，such as the link structural deformation potential parameter ，the friction structural deformation potential parameter and the structural deformation potential parameter mp. The variation of the structural properties and the structural parameters of loess is studied through the confined compression tests of intact loess and man-made cement structural loess；and the effect of the moisture，pressure，density and cement content on the loess structural properties is revealed. Finally，the rationality of these structural parameters based on soil deformation is discussed.
