A Numerical Study of the Effect of By-product- Crushed Slag Aggregate and Geogrid Technique in Improved Soft Soils Properties

doi:10.21608/asge.2022.280714

A Numerical Study of the Effect of By-product- Crushed Slag Aggregate and Geogrid Technique in Improved Soft Soils Properties

Document Type : Original Article

10.21608/asge.2022.280714

Abstract

The aim of this study to complete investigated of improved the shallow soft soils deposit by using Steel Slag Coarse Aggregate (SSCA) mixture as replacement considering geogrid reinforcement layers. The study is investigating effective depth of geogrid layer and inspects its effect on reduced extreme deformation of loaded soft fine soil using numerical method model. Finite elements, 2D PLAXIS, is used to simulate strip footing resting on improved soil by replacement mixture of optimum percent of Steel Slag Coarse Aggregate (SSCA) in gravelly size with dried natural soil considering thickness equal footing width. The paper presents case study of improved soft soils obtained from site of salt stores at Al-Qubari, Alexandria, which was observed, failed under excess store load. The study indicated that using (SSCA) as partial replacement improved compressibility, when geogrid layer at the lower one third of replacement thickness and increase its capacity loads. Also, when using two layer of reinforcement at depths lower and upper one third of replacement thickness induced slightly reduction in footing settlement or didn't enhance considerable result in decrease settlement.

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