'Microbial mortar'- restoration of degraded marble structures with microbially induced carbonate precipitation

James M. Minto, Qian Tan, Rebecca J. Lunn, Grainne El Mountassir, Hongxian Guo, Xiaohui Cheng

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8 Citations (Scopus)
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Abstract

To evaluate a restoration strategy for highly degraded marble structures, microbially induced carbonate precipitation (MICP) has been employed to reduce porosity and permeability in a column filled with coarse crushed marble. A 3D X-ray tomography scan revealed the spatial variation in porosity throughout the column and tracer breakthrough curves, recorded at intervals during treatment, enabled derivation of core-scale fluid transport properties and their alteration by precipitating carbonate. Micro-continuum scale flow modelling based on the X-ray data indicated that treatment led to changes in the pore network structure with flow increasingly focused into a smaller number of faster flowing open channels.
Original languageEnglish
Pages (from-to)44-54
Number of pages11
JournalConstruction and Building Materials
Volume180
Early online date2 Jun 2018
DOIs
Publication statusPublished - 20 Aug 2018

Keywords

  • microbially induced carbonate precipitation
  • marble restoration
  • X-ray CT
  • micro-continuum flow modelling

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    • 8 Citations
    • 1 Conference contribution book
    • 1 Article
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  • 2 Citations (Scopus)
    8 Downloads (Pure)

    Micro-continuum modelling of injection strategies for microbially induced carbonate precipitation

    Minto, J. M., El Mountassir, G. & Lunn, R. J., 25 Jun 2019, E3S Web of Conferences: 7th International Symposium on Deformation Characteristics of Geomaterials (IS-Glasgow 2019) . Tarantino, A. & Ibraim, E. (eds.). [Bloomsbury]: EDP Sciences, Vol. 92. 5 p. 11019

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