Monotonic and cyclic behaviour of root-reinforced sand

Plant roots are known to provide mechanical reinforcement soils upon shearing and seismic loading. However, the effects of different stress paths on root remain unclear. Moreover, whether how resistance soil liquefaction cyclic loading have rarely been studied. The objective this study is conduct a series undrained triaxial tests investigate monotonic behaviour rooted sand. Roots vetiver grass (Chrysopogon zizanioides L.), which has advocated for use in shallow slope stabilisation purposes, were used testing. diameters ranged between 0.3 1.5 mm, while volume ratios (RVRs) 0.23%, 0.45%, 0.67%. It was discovered that effect anisotropic path-dependent. Along extension path, when major principal perpendicular predominant orientation, root-induced increase friction angle approximately 10°. This much greater than along compression where change minimal. presence prevented limited flow failure at some RVRs (CSRs) (which occurred unreinforced sand) mode root-reinforced switched mobility. improved with an volume, improvement more remarkable higher CSRs.