In order to reveal the degree and rule that the soluble salt influences the loess thixotropy

taking Ningxia Tongxin loess as the object and its dry density

water content and salinity as factors

the thixotropy of loess is studied by designing the orthogonal test scheme. The results show that thixotropic parameter of loess increases with the growth of the dry density and salinity

and decreases with the growth of the water content and increase with the growth of the age. The sequence of various factors is water content

dry density and salinity

which affect the loess thixotropy. Based on the orthogonal test results

single factor experiment is carried out with the salinity as the factor. It is found that there is a logarithm relationship between thixotropic parameter and salinity; and there is a good correlation between them. It is obvious that the soluble salt affects on the loess thixotropy

the soluble salt is one of the important factors. The conclusion will have important guiding significance on the foundation design

construction and treatment in the loess area.