Soft soil strengthening by stone columns: case of the embankment under the bridge “Moulay Youssef” (Rabat/Salé)Noura Nehab, Khadija Baba, Latifa Ouadif, Choukri Cherradi and Lahcen BahiMATEC Web of Conferences, 11 (2014) 02012DOI: https://doi.org/10.1051/matecconf/20141102012