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Experimental and Numerical Evaluation Performance of Strip Foundation Reinforced with Steel Slag Columns Compared to Skirted Foundation

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Abstract

Researchers are increasingly focused on assessing various approaches to improve sandy soil conditions for shallow foundation construction. The common ground improvement methods often include adding skirts around the edges of shallow foundations and placing columns under the foundation. In 2021, world iron slag production was estimated to be 400 million tons; the application of steel slag helped to conserve non-renewable resources, reduce environmental pollution, and create a green economy. The vertical bearing capacity of the strip foundation was compared with the addition of skirts and improved with slag columns located on the sand using physical and numerical modeling. The results of the data analysis revealed that using slag columns, with or without geotextile reinforcement, significantly increased the bearing capacity of the strip foundation. The bearing capacity was found to be increased by 4 times when using slag columns with reinforcing geotextile, and by 2.5 times when using slag columns without reinforcement. Additionally, replacing the strip foundation with a skirt foundation resulted in a roughly 3.75-fold increase in the bearing capacity.

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Data availability

The corresponding author will provide the datasets developed during and/or analyzed during the present investigation upon reasonable request.

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Funding

No particular grant was given to this study by any funding organization in the public, private, or nonprofit sectors.

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Authors and Affiliations

  1. Department of Civil Engineering, Najafabad Islamic Azad University, Najafabad, Iran

    Moein Mohammadizadeh, Bahram Nadi & Alborz Hajiannia

  2. Department of Civil and Environmental Engineering, Ruhr-Universität Bochum, Bochum, Germany

    Elham Mahmoudi

Authors
  1. Moein Mohammadizadeh
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  2. Bahram Nadi
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  3. Alborz Hajiannia
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  4. Elham Mahmoudi
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Contributions

MM constructing a model of the test device; conducting the experiments; evaluating the outcomes; and writing the article’s preliminary text. BN and EM conceived and designed the experiments, reviewed the test outcomes, and improved the interpretations. AH Assistance in obtaining analytical results according to the 3D model of the tests; support in interpreting test results; review and final certification of tests; assistance in preparing steel slag materials for analysis; assistance with identifying the characteristics of materials to be assessed; assistance in the final review of figures. Ultimately, the text was read by BN, AH, and EM.

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Correspondence to Bahram Nadi.

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Mohammadizadeh, M., Nadi, B., Hajiannia, A. et al. Experimental and Numerical Evaluation Performance of Strip Foundation Reinforced with Steel Slag Columns Compared to Skirted Foundation. Indian Geotech J (2024). https://doi.org/10.1007/s40098-024-00921-w

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