'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

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.
LanguageEnglish
Pages44-54
Number of pages11
JournalConstruction and Building Materials
Volume180
Early online date2 Jun 2018
DOIs
Publication statusPublished - 20 Aug 2018

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Marble
Calcium Carbonate
Carbonates
Mortar
Restoration
Porosity
X rays
Transport properties
Tomography
Fluids

Keywords

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

Cite this

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'Microbial mortar'- restoration of degraded marble structures with microbially induced carbonate precipitation. / Minto, James M.; Tan, Qian; Lunn, Rebecca J.; El Mountassir, Grainne; Guo, Hongxian; Cheng, Xiaohui.

In: Construction and Building Materials, Vol. 180, 20.08.2018, p. 44-54.

Research output: Contribution to journalArticle

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AU - Guo, Hongxian

AU - Cheng, Xiaohui

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