Proposing a New Approach to Assess Suffusion Phenomenon Based on Physical Properties of Soil

Suffusion is the moving of soil particles through the soil body. The grain size distribution and porosity of soils are the most important factors that influence on suffusion process. Up to now, many methods have been proposed to predict suffusion which the validation of them are less clear because most available criteria are based on tests on limited soils.In this research some exiting methods developed based on soil porosity have been investigated. Some samples of soil with different porosity and aggregation have been selected and suffusion possibility is estimated for them by use of the exiting criteria. Based on results, these methods are slightly unconservative to evaluate suffusion. Some samples are recognized stable, whereas they are experienced suffusion and vice versa. Finally, statistically analyses have been developed to modify these methods based on physical properties of soil.

Keywords:

Suffusion , Soil Porosity , Relative Density , Statistically Analysis