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Finite Element Analysis of SiCC Column on Expansive Soil
Willis Diana,Desi Rahmawati, Agus setyo Muntohar

Universitas Muhammadiyah Yogyakarta


Abstract

Expansive soil is generally defined as any soil or rock material that exhibit volumetric deformation when their water content changes. They have a potential to swell and shrink under increasing and decreasing water content. This phenomenon can cause in damage to the infrastructure on it. The technique of lime columns, cement columns or lime-cement columns are an alternative method to improve and reduce the problems on this soil. The SiCC columns are columns made of a mixture of micro calcium and micro cylica used not only to stabilize the expansive soil but also to reinforce the soil. The SiCC was function as stabilize agent to soil surrounding the column that made the soil parameter changes. Hence, the soil parameters changes around the column should be determined. This study aims to determine the changes of soil parameter after the installation of SiCC Column. The analysis was done by finite element method using Abaqus 6.11. The soil was modeled with Drucker-Prager model. The soil parameter was predicted and analyzed until the deformation that occurred on finite element model was same with the physical laboratory model. The SiCC column model used in this study was T-shape column with diameter 15,24 cm in head diameter and column length were varied 70 cm and 50 cm, and loaded with 8 tons point load. The modeling results show that plate system with rigid pavement on expansive soils reinforced with SiCC column T-shape with length 50 cm have deformation value 10,76 mm. While the plate system with rigid pavement on expansive soil reinforced with SiCC column T-shape with a length of 70 cm have deformation value 7,04 mm. The results show that the longer pile produced the small deformation and the stiffer soil parameter.

Keywords: Finite element analysis, plate system, T-shape SiCC column

Topic: International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/LYGNqKMA8j7C

Conference: The 3rd International Conference on Sustainability and Innovation (ICoSI 2019)

Plain Format | Corresponding Author (Willis Diana)

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