Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization
The study presented herein adopts a new vision of the processes involved in carbonate mineralization induced by MICP from an electrochemical and crystal growth perspective. More precisely a specific line of focus refers to the species involved in the bio-chemical reactions and especially their net p...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2020-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/55/e3sconf_e-unsat2020_05007.pdf |
| _version_ | 1818967452016443392 |
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| author | Terzis Dimitrios Hicher Patrick Laloui Lyesse |
| author_facet | Terzis Dimitrios Hicher Patrick Laloui Lyesse |
| author_sort | Terzis Dimitrios |
| collection | DOAJ |
| description | The study presented herein adopts a new vision of the processes involved in carbonate mineralization induced by MICP from an electrochemical and crystal growth perspective. More precisely a specific line of focus refers to the species involved in the bio-chemical reactions and especially their net particle charge. By altering electro-chemical conditions via the application of direct electric currents, we observe distinctive trends related to: (i) overall reaction efficiency; (ii) carbonate mineralization/dissolution and (iii) spatial distribution of precipitates. The study introduces the concept of EA-MICP which stands for Electrically Assisted MICP as a means of improving the efficiency of soil bio-consolidation and overcoming various challenges which were previously reported in conventional MICP-based works. Results reveal both the detrimental and highly beneficial role that electric currents can hold in the complex, reactive and transport processes involved. An interesting finding is the “doped” morphology of calcite crystals, precipitated under electric fields, validated by microstructural observations. |
| first_indexed | 2024-12-20T13:49:01Z |
| format | Article |
| id | doaj.art-503c2481352d46c385ce4da362141cea |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-20T13:49:01Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-503c2481352d46c385ce4da362141cea2022-12-21T19:38:34ZengEDP SciencesE3S Web of Conferences2267-12422020-01-011950500710.1051/e3sconf/202019505007e3sconf_e-unsat2020_05007Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralizationTerzis Dimitrios0Hicher Patrick1Laloui Lyesse2Swiss Federal Institute of Technology Lausanne (EPFL), Soil Mechanics LaboratorySwiss Federal Institute of Technology Lausanne (EPFL), Soil Mechanics LaboratorySwiss Federal Institute of Technology Lausanne (EPFL), Soil Mechanics LaboratoryThe study presented herein adopts a new vision of the processes involved in carbonate mineralization induced by MICP from an electrochemical and crystal growth perspective. More precisely a specific line of focus refers to the species involved in the bio-chemical reactions and especially their net particle charge. By altering electro-chemical conditions via the application of direct electric currents, we observe distinctive trends related to: (i) overall reaction efficiency; (ii) carbonate mineralization/dissolution and (iii) spatial distribution of precipitates. The study introduces the concept of EA-MICP which stands for Electrically Assisted MICP as a means of improving the efficiency of soil bio-consolidation and overcoming various challenges which were previously reported in conventional MICP-based works. Results reveal both the detrimental and highly beneficial role that electric currents can hold in the complex, reactive and transport processes involved. An interesting finding is the “doped” morphology of calcite crystals, precipitated under electric fields, validated by microstructural observations.https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/55/e3sconf_e-unsat2020_05007.pdf |
| spellingShingle | Terzis Dimitrios Hicher Patrick Laloui Lyesse Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization E3S Web of Conferences |
| title | Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| title_full | Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| title_fullStr | Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| title_full_unstemmed | Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| title_short | Benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| title_sort | benefits and drawbacks of applied direct currents for soil improvement via carbonate mineralization |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/55/e3sconf_e-unsat2020_05007.pdf |
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