不同固化材料在黄土中的扩散特征

With the construction of infrastructure in the loess area, the study of loess improvement has become more and more important. Nanometer silicon, a new type strengthening material, is a better material to strengthening loess. Physical test of fly ash, lime and nanometer silicon put into loess as piles are performed and the diffusion process of these piles are simulated. Analyze diffusion phenomenon of strengthening materials in the loess based on comparing the changes of physical and chemical properties of loess that before and after strengthen. At last the diffusion mechanism is briefly discussed. It is found that: the effect of strengthen materials on loess is reduced along with radius, and lime has an important effect on moisture content of loess, nanometer silicon has a significant effect on density of loess. Different materials were diffused into loess like a funnel, and its effect radius was about 200mm, sensitive radius was 50mm. In addition, the diffusion of strengthening materials relies on their physical, chemical adsorptions and exchange reactions.