Investigation of the Bearing Capacity and Collapsibility of Gypseous Soil Using Geotextile Reinforcement

This study aims to increase the bearing capacity of soil by using geosynthetics in a single, double, or triple distribution pattern. The gypseous samples were brought from site near Sawa Lake Al-Muthanna Governorate with gypsum content about (37%), Soil-Model apparatus dimensions (60 × 60 50) cm proposed square footing (10 10) are used experimental program this study. To achieve goal, series (48) different model tests on subjected vertical stress both dry and wet (saturation) conditions. Depending results load-settlement curves relationships, ultimate models was determined Two Tangent Intersection technique. also showed that number geotextile layers relative density significantly impact improvement models. Furthermore, ratio (BCR%) for tested after being reinforced layer at (RD) 30% 60% double percentage case higher than case. It 143 % when triple-layer depths reinforcement, while it 96