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Modelling the New Soil Improvement Method Biogrout: Extension to 3D

In: Numerical Mathematics and Advanced Applications 2009

Author

Listed:
  • W. K. van Wijngaarden

    (Deltares,unit Geo Engineering)

  • F. J. Vermolen

    (Delft University of Technology, Delft Institute of Applied Mathematics)

  • G. A. M. van Meurs

    (Deltares,unit Geo Engineering)

  • C. Vuik

    (Delft University of Technology, Delft Institute of Applied Mathematics)

Abstract

Biogrout is a new soil improvement method based on microbial induced carbonate precipitation. Bacteria and reactants are flushed through the soil, resulting in calcium carbonate precipitation and consequent soil reinforcement. A mathematical model was created to describe the process. The model contains the concentrations of the dissolved species that are present in the precipitation reaction. These concentrations can be solved from a convection-dispersion-reaction equation with a variable porosity. Other model equations involve the concentrations of the bacteria and of the solid calcium carbonate, the decreasing porosity (due to precipitation) and the flow. The partial differential equations are solved by the Standard Galerkin Finite Element Method. The subject of this paper is the extension of the mathematical model to 3D.

Suggested Citation

  • W. K. van Wijngaarden & F. J. Vermolen & G. A. M. van Meurs & C. Vuik, 2010. "Modelling the New Soil Improvement Method Biogrout: Extension to 3D," Springer Books, in: Gunilla Kreiss & Per Lötstedt & Axel Målqvist & Maya Neytcheva (ed.), Numerical Mathematics and Advanced Applications 2009, pages 893-900, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-11795-4_96
    DOI: 10.1007/978-3-642-11795-4_96
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