Study of Geotechnical Properties of Clay mixed with Geofoam Particles

Subject Areas : محاسبات نرم در علوم مهندسی

Sepehr Saedi ¹ ( M.Sc. of Geotechnical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran )
Rouzbeh Dabiri ² ( Assistant Professor, Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran )
Larissa Khodadadi ³ ( Assistant Professor, Department of Electrical Engineering, Tabriz Branch, Islamic Azad university, Tabriz , Iran )

Received: 2021-12-17 Accepted : 2022-02-27 Published : 2022-08-23

Keywords: clay, Improvement, moisture, Geofoam, Plasticity properties,

Abstract :

Nowadays new materials for improving bearing capacity of soils are widely used. Kind of new materials used in this regard are geosynthetics. Geofoam panel type of geosyntethic materials is useful and alternative for backfill in retaining wall or pavement layers. Main idea in this research is study geofoam particles and moisture effects on improvement bearing capacity of clayey soil. Geofoam particles effects on clay in 0.05, 0.1, 0.2, and 0.3% percent were considered. Also, moisture were changed in 10, 12, 14, 16, 18 and 20 percent in specimens. In order to evaluating geofoam particles influence in geotechnical properties of clayey soil some laboratory tests such as compaction, uniaxial strength, direct shear and permeability tests were performed. Results of this study showed that clay specimens with 0.05% geofoam particles along with 14 % water content have optimum geotechnical behavior. As, maximum dry density went up, permeability decreased and shear strength of specimens increased.