Influence of Ground Improvement Techniques on Liquefaction Potential in Seismic Zones

Zuhair Abd Hacheem; Sabah Hassan Fartosy; Haider Ali Al-Mussawy

doi:10.63278/10.63278/mme.v31.1

Authors

Zuhair Abd Hacheem Assistant Professor, Department of Water Resources Engineering, Engineering College, Mustansiriyah University, Iraq
Sabah Hassan Fartosy Assistant Professor, Department of Water Resources Engineering, Engineering College, Mustansiriyah University, Iraq
Haider Ali Al-Mussawy Professor, Department of Water Resources Engineering, Engineering College, Mustansiriyah University, Iraq

DOI:

https://doi.org/10.63278/10.63278/mme.v31.1

Keywords:

A Soil Liquefaction, Ground Improvement Techniques, Nano-Silica Grouting, Dynamic Compaction, Chemical Stabilization.

Abstract

This study investigates the effectiveness of advanced ground improvement techniques in mitigating soil liquefaction in seismic areas of Iraq. A comprehensive experimental and numerical framework was employed, incorporating methods such as injection grouting (using nano-silica and cement), retaining walls, dynamic compaction, and chemical stabilization with fly ash and the results demonstrated significant improvements in the Factor of Safety (FS), shear strength, and dynamic soil response post-treatment. Nano-silica grouting exhibited the highest enhancement in liquefaction resistance, particularly under high seismic intensities, followed by retaining walls and cement grouting. Numerical simulations using GeoStudio and OpenSees provided predictive models of soil behavior under various seismic scenarios, confirming the effectiveness of the treatments in reducing shear strain, improving damping, and minimizing pore water pressure buildup and these findings offer practical insights for designing resilient infrastructure in seismic-prone regions and establish a robust foundation for future geotechnical applications.

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