Soft clay improvement using eggshell powder as a sustainable material

Sakr, Mohamed A.; Nazir, Ashraf K.; Azzam, Wasiem R.; Ali, Nehal O.

doi:10.1080/19386362.2023.2295684

International Journal of Geotechnical Engineering

2023

DOI: 10.1080/19386362.2023.2295684

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Soft clay improvement using eggshell powder as a sustainable material

Mohamed A. Sakr,

Ashraf K. Nazir,

Wasiem R. Azzam

et al.

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2024

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Free strain consolidation of soft ground improved by stone columns under time-dependent loading considering smear effects

Liu,

Wu,

Yin

et al. 2024

Acta Geotech.

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This paper presents a consolidation model for stone column-reinforced soft ground subjected to time-dependent loading under free strain condition. Smear effects and three types of loadings, namely, constant loading, ramp loading, and sinusoidal loading, are considered in the developed consolidation model, which is solved by a numerical method based on a partial differential equation solver. The applicability of the proposed consolidation model and the reliability of the numerical method are demonstrated and verified by well-predicting the consolidation behaviors of two practical engineering cases and one laboratory experiment. The verified model and the numerical method are then employed to investigate the effects of smear zone and time-dependent loading on consolidation characteristics of stone column-improved soft ground. The results indicate that the excess pore water pressure undergoes a sharp change at the interface between the smear zone and the undisturbed zone due to smear effects. The smaller the range of the smear zone, the faster the settlement of the composite foundation develops. The faster the loading rate, the faster the dissipation of excess pore water pressure and the faster the settlement develops. In addition, for the foundation subjected to sinusoidal loading, the higher loading frequency results in a larger amplitude corresponding to the excess pore water pressure and a smaller amplitude corresponding to the settlement of the soil.

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Free strain consolidation of soft ground improved by stone columns under time-dependent loading considering smear effects

Liu,

Wu,

Yin

et al. 2024

Acta Geotech.

View full text Add to dashboard Cite

show abstract

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Soft clay improvement using eggshell powder as a sustainable material

Cited by 1 publication

References 17 publications

Free strain consolidation of soft ground improved by stone columns under time-dependent loading considering smear effects

Free strain consolidation of soft ground improved by stone columns under time-dependent loading considering smear effects

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