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

W. K. van Wijngaarden (), F. J. Vermolen (), G. A. M. van Meurs () and C. Vuik ()
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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

A chapter in Numerical Mathematics and Advanced Applications 2009, 2010, pp 893-900 from Springer

Abstract: 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.

Keywords: Calcium Carbonate; Carbonate Precipitation; Calcium Carbonate Precipitation; Intrinsic Permeability; Soil Improvement (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1007/978-3-642-11795-4_96

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