L’Utilisation de la poudre de verre pour la stabilisation des talus (Étude expérimentale et numérique)

Abstract

The phenomenon of slope instability is one of the most complex geotechnical problems, as clearly illustrated by the slope located on National Road N2 connecting the municipalities of Bensekrane and Amieur, where this site is subject to repeated landslides that threaten the safety of road users and nearby infrastructures. The stability of this slope mainly depends on the mechanical properties of the soil, particularly cohesion (c) and the internal friction angle (φ). This study aims to evaluate the effectiveness of recycled glass powder as a sustainable additive to improve soil stability at the studied site, by adopting a methodology that combines laboratory tests to determine shear strength characteristics after addition, and numerical modelling of the slope behaviour under both static and dynamic conditions using PLAXIS 2D and Géo-Slope software. The obtained results show a significant improvement in shear strength, reflected in an increase in the safety factor (FS), which confirms the effectiveness of glass powder as a relevant geotechnical and environmental solution for enhancing slope stability.