Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment
Abstract Reinforcement corrosion in marine environments poses a significant threat to the durability of concrete structures. This study investigates the effects of microbial-induced carbonation precipitation on reinforcement corrosion of concrete exposed to the marine environment. The investigation...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2025-03-01
|
| Series: | Discover Civil Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s44290-025-00200-4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850039720618229760 |
|---|---|
| author | Loïc Kevin Youssa Tchamou Caihong Xue |
| author_facet | Loïc Kevin Youssa Tchamou Caihong Xue |
| author_sort | Loïc Kevin Youssa Tchamou |
| collection | DOAJ |
| description | Abstract Reinforcement corrosion in marine environments poses a significant threat to the durability of concrete structures. This study investigates the effects of microbial-induced carbonation precipitation on reinforcement corrosion of concrete exposed to the marine environment. The investigation involved a comprehensive evaluation of the mechanical properties, chloride penetration, corrosion performance, self-healing ability, and microstructural analysis of concrete samples treated with microbial-induced carbonate precipitation (MICP) exposed to seawater (SW) and sodium chloride (NaCl) solutions. The study was conducted through compressive, flexural strength, and chloride concentration tests, self-healing cracks analysis, linear polarisation LPR, scanning electron microscopy (SEM), and X-ray diffraction. The experiments used an environmentally friendly, broad-spectrum bacteria, Bacillus subtilis, to perform MICP. The results revealed that Bacillus subtilis through MICP had a negative impact on mechanical strength; after 28d, the compressive strength decreased up to 49.22% and 51.04% for 6% and 2% Bacillus subtilis dosage, respectively. Bacterial concrete had a higher chloride concentration than the concrete without bacteria; an increase of up to 123.28% was observed in 4% bacterial replacement at 84 days of curing. MICP-concrete samples immersed in seawater and sodium chloride solutions showed no healing capability. During the exposure setup for 98 days, LPR decreased over time, indicating an increase in corrosion rate. |
| format | Article |
| id | doaj-art-33ae9f066fd040b282e7ba667d75a2c3 |
| institution | DOAJ |
| issn | 2948-1546 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Civil Engineering |
| spelling | doaj-art-33ae9f066fd040b282e7ba667d75a2c32025-08-20T02:56:15ZengSpringerDiscover Civil Engineering2948-15462025-03-012111610.1007/s44290-025-00200-4Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environmentLoïc Kevin Youssa Tchamou0Caihong Xue1State Key Laboratory of Metastable Materials Science and Technology, Yanshan UniversityState Key Laboratory of Metastable Materials Science and Technology, Yanshan UniversityAbstract Reinforcement corrosion in marine environments poses a significant threat to the durability of concrete structures. This study investigates the effects of microbial-induced carbonation precipitation on reinforcement corrosion of concrete exposed to the marine environment. The investigation involved a comprehensive evaluation of the mechanical properties, chloride penetration, corrosion performance, self-healing ability, and microstructural analysis of concrete samples treated with microbial-induced carbonate precipitation (MICP) exposed to seawater (SW) and sodium chloride (NaCl) solutions. The study was conducted through compressive, flexural strength, and chloride concentration tests, self-healing cracks analysis, linear polarisation LPR, scanning electron microscopy (SEM), and X-ray diffraction. The experiments used an environmentally friendly, broad-spectrum bacteria, Bacillus subtilis, to perform MICP. The results revealed that Bacillus subtilis through MICP had a negative impact on mechanical strength; after 28d, the compressive strength decreased up to 49.22% and 51.04% for 6% and 2% Bacillus subtilis dosage, respectively. Bacterial concrete had a higher chloride concentration than the concrete without bacteria; an increase of up to 123.28% was observed in 4% bacterial replacement at 84 days of curing. MICP-concrete samples immersed in seawater and sodium chloride solutions showed no healing capability. During the exposure setup for 98 days, LPR decreased over time, indicating an increase in corrosion rate.https://doi.org/10.1007/s44290-025-00200-4MICPCracksChloride penetrationSelf-healingReinforcement corrosion |
| spellingShingle | Loïc Kevin Youssa Tchamou Caihong Xue Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment Discover Civil Engineering MICP Cracks Chloride penetration Self-healing Reinforcement corrosion |
| title | Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment |
| title_full | Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment |
| title_fullStr | Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment |
| title_full_unstemmed | Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment |
| title_short | Effect of MICP on reinforcement corrosion of cement concrete exposed to the marine environment |
| title_sort | effect of micp on reinforcement corrosion of cement concrete exposed to the marine environment |
| topic | MICP Cracks Chloride penetration Self-healing Reinforcement corrosion |
| url | https://doi.org/10.1007/s44290-025-00200-4 |
| work_keys_str_mv | AT loickevinyoussatchamou effectofmicponreinforcementcorrosionofcementconcreteexposedtothemarineenvironment AT caihongxue effectofmicponreinforcementcorrosionofcementconcreteexposedtothemarineenvironment |