Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection
Soil improvement via MICP (microbially induced carbonate precipitation) technologies has recently received widespread attention in the geoenvironmental and geotechnical fields. The durability of MICP-treated samples remains a critical concern in this novel method. In this work, fiber (jute)-reinforc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/7/2389 |
| _version_ | 1797438653802217472 |
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| author | Md Al Imran Kazunori Nakashima Niki Evelpidou Satoru Kawasaki |
| author_facet | Md Al Imran Kazunori Nakashima Niki Evelpidou Satoru Kawasaki |
| author_sort | Md Al Imran |
| collection | DOAJ |
| description | Soil improvement via MICP (microbially induced carbonate precipitation) technologies has recently received widespread attention in the geoenvironmental and geotechnical fields. The durability of MICP-treated samples remains a critical concern in this novel method. In this work, fiber (jute)-reinforced MICP-treated samples were investigated to evaluate their durability under exposure to distilled water (DW) and artificial seawater (ASW), so as to advance the understanding of long-term performance mimicking real field conditions, along with improvement of the MICP-treated samples for use in coastal erosion protection. Primarily, the results showed that the addition of fiber (jute) improved the durability of the MICP-treated samples by more than 50%. Results also showed that the wet–dry (WD) cyclic process resulted in adverse effects on the mechanical and physical characteristics of fiber-reinforced MICP-treated samples in both DW and ASW. The breakdown of calcium carbonates and bonding effects in between the sand particles was discovered to be involved in the deterioration of MICP samples caused by WD cycles, and this occurs in two stages. The findings of this study would be extremely beneficial to extend the insight and understanding of improvement and durability responses for significant and effective MICP treatments and/or re-treatments. |
| first_indexed | 2024-03-09T11:41:23Z |
| format | Article |
| id | doaj.art-5519f05a93af473782473c8ccc100243 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:41:23Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5519f05a93af473782473c8ccc1002432023-11-30T23:31:28ZengMDPI AGMaterials1996-19442022-03-01157238910.3390/ma15072389Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion ProtectionMd Al Imran0Kazunori Nakashima1Niki Evelpidou2Satoru Kawasaki3Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, JapanFaculty of Engineering, Hokkaido University, Sapporo 060-8628, JapanFaculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Athens, GreeceFaculty of Engineering, Hokkaido University, Sapporo 060-8628, JapanSoil improvement via MICP (microbially induced carbonate precipitation) technologies has recently received widespread attention in the geoenvironmental and geotechnical fields. The durability of MICP-treated samples remains a critical concern in this novel method. In this work, fiber (jute)-reinforced MICP-treated samples were investigated to evaluate their durability under exposure to distilled water (DW) and artificial seawater (ASW), so as to advance the understanding of long-term performance mimicking real field conditions, along with improvement of the MICP-treated samples for use in coastal erosion protection. Primarily, the results showed that the addition of fiber (jute) improved the durability of the MICP-treated samples by more than 50%. Results also showed that the wet–dry (WD) cyclic process resulted in adverse effects on the mechanical and physical characteristics of fiber-reinforced MICP-treated samples in both DW and ASW. The breakdown of calcium carbonates and bonding effects in between the sand particles was discovered to be involved in the deterioration of MICP samples caused by WD cycles, and this occurs in two stages. The findings of this study would be extremely beneficial to extend the insight and understanding of improvement and durability responses for significant and effective MICP treatments and/or re-treatments.https://www.mdpi.com/1996-1944/15/7/2389MICPjute fiberdurabilitysoil improvementbiocementfiber reinforcement |
| spellingShingle | Md Al Imran Kazunori Nakashima Niki Evelpidou Satoru Kawasaki Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection Materials MICP jute fiber durability soil improvement biocement fiber reinforcement |
| title | Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection |
| title_full | Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection |
| title_fullStr | Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection |
| title_full_unstemmed | Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection |
| title_short | Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection |
| title_sort | durability improvement of biocemented sand by fiber reinforced micp for coastal erosion protection |
| topic | MICP jute fiber durability soil improvement biocement fiber reinforcement |
| url | https://www.mdpi.com/1996-1944/15/7/2389 |
| work_keys_str_mv | AT mdalimran durabilityimprovementofbiocementedsandbyfiberreinforcedmicpforcoastalerosionprotection AT kazunorinakashima durabilityimprovementofbiocementedsandbyfiberreinforcedmicpforcoastalerosionprotection AT nikievelpidou durabilityimprovementofbiocementedsandbyfiberreinforcedmicpforcoastalerosionprotection AT satorukawasaki durabilityimprovementofbiocementedsandbyfiberreinforcedmicpforcoastalerosionprotection |