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Biocementation as a Pro-Ecological Method of Stabilizing Construction Subsoil

Author

Listed:
  • Katarzyna Stefaniak

    (Institute of Geology, Adam Mickiewicz University, 61-680 Poznań, Poland)

  • Jędrzej Wierzbicki

    (Institute of Geology, Adam Mickiewicz University, 61-680 Poznań, Poland)

  • Barbara Ksit

    (Institute of Building Engineering, Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo 5, 60-965 Poznań, Poland)

  • Anna Szymczak-Graczyk

    (Department of Construction and Geoengineering, Faculty of Environmental and Mechanical Engineering, Poznan University of Life Sciences, Piątkowska 94E, 60-649 Poznań, Poland)

Abstract

The principle of sustainable development imposes an obligation on societies to manage natural resources rationally and to care for the quality of the environment, by, among other things, reducing CO 2 emissions. Alternative ways of stabilising building substrates by increasing their shear strength (c u ) are increasingly being sought. This paper presents how microorganisms can influence c u and thus the load-bearing capacity of building substrates. Tests were performed in a triaxial compression apparatus in three variants. The first variant of testing was carried out on cemented soil samples, which were cemented in situ. The next two series of tests were performed on reconstructed samples, i.e., natural soil and soil inoculated with a solution of Sporosarcina pasteurii bacteria . The results obtained show that carbonate cementation increases the shear strength of the soil; in addition, this biomineralization-induced cementation gives higher c u results than natural carbonate cementation.

Suggested Citation

  • Katarzyna Stefaniak & Jędrzej Wierzbicki & Barbara Ksit & Anna Szymczak-Graczyk, 2023. "Biocementation as a Pro-Ecological Method of Stabilizing Construction Subsoil," Energies, MDPI, vol. 16(6), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2849-:d:1101374
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