Stability Analysis of Embankment Using Finite Element Method Constructed Over Treated Soil with Anionic Polyacrylamide

Abstract

This paper presents a method for deformation analysis of soil treated with anionic polyacrylamide (APAM) as embankment fill material. The stability analyses of the embankment have been done by two-dimensional finite element analysis. t has been carried out for different conditions considering the geometry of the embankment and material properties. Several models were analysed to determine the safe height and side slope required to stabilize the embankment in addition to that of treated soils for the embankment. Numerical results show that with increasing slope height and angle, the factor of safety decreases. Conversely, if the height and slope of the slope decrease, the factor of safety increases. Also, the deformation decreased along with the increase in APAM percentage. It is observed that the high percentage of 1% APAM stabilisation, the highest shear strength parameters and the lowest deformation occurred. This study found that APAM-treated saturated soils could be used as embankment fill, but with potentially more extensive failures.