Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6712423 | Construction and Building Materials | 2018 | 11 Pages |
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.
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
James M. Minto, Qian Tan, Rebecca J. Lunn, GrĂ¡inne El Mountassir, Hongxian Guo, Xiaohui Cheng,