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

James M. Minto; Qian Tan; Rebecca J. Lunn; Gráinne El Mountassir; Hongxian Guo; Xiaohui Cheng

doi:10.1016/j.conbuildmat.2018.05.200

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

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

Civil And Environmental Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

34 Downloads (Pure)

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 language	English
Pages (from-to)	44-54
Number of pages	11
Journal	Construction and Building Materials
Volume	180
Early online date	2 Jun 2018
DOIs	https://doi.org/10.1016/j.conbuildmat.2018.05.200
Publication status	Published - 20 Aug 2018

Keywords

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

Access to Document

10.1016/j.conbuildmat.2018.05.200Licence: CC BY 4.0

Minto-etal-CBM-2018-Microbial-mortar-restoration-of-degraded-marble-structuresFinal published version, 4.31 MBLicence: CC BY 4.0

Cite this

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title = "'Microbial mortar'- restoration of degraded marble structures with microbially induced carbonate precipitation",

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.",

keywords = "microbially induced carbonate precipitation, marble restoration, X-ray CT, micro-continuum flow modelling",

author = "Minto, {James M.} and Qian Tan and Lunn, {Rebecca J.} and {El Mountassir}, Gr{\'a}inne and Hongxian Guo and Xiaohui Cheng",

year = "2018",

month = aug,

day = "20",

doi = "10.1016/j.conbuildmat.2018.05.200",

language = "English",

volume = "180",

pages = "44--54",

journal = "Construction and Building Materials",

issn = "0950-0618",

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TY - JOUR

T1 - 'Microbial mortar'- restoration of degraded marble structures with microbially induced carbonate precipitation

AU - Minto, James M.

AU - Tan, Qian

AU - Lunn, Rebecca J.

AU - El Mountassir, Gráinne

AU - Guo, Hongxian

AU - Cheng, Xiaohui

PY - 2018/8/20

Y1 - 2018/8/20

N2 - 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.

AB - 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.

KW - microbially induced carbonate precipitation

KW - marble restoration

KW - X-ray CT

KW - micro-continuum flow modelling

UR - https://www.sciencedirect.com/journal/construction-and-building-materials

U2 - 10.1016/j.conbuildmat.2018.05.200

DO - 10.1016/j.conbuildmat.2018.05.200

M3 - Article

VL - 180

SP - 44

EP - 54

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

ER -

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

Abstract

Keywords

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Other files and links

Fingerprint

Grainne El Mountassir

A new generation of self-healing detectable grouts (EPSRC Big Pitch)

GREAT: Marie Curie International Research Staff Exchange Scheme

Nikon XCT 320 - Xray PC Microtomography

Development of a reactive transport model for field-scale simulation of microbially induced carbonate precipitation

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

Cite this

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Profiles

Grainne El Mountassir

Projects

A new generation of self-healing detectable grouts (EPSRC Big Pitch)

GREAT: Marie Curie International Research Staff Exchange Scheme

Equipment

Nikon XCT 320 - Xray PC Microtomography

Research output

Development of a reactive transport model for field-scale simulation of microbially induced carbonate precipitation

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

Cite this