Asian Journal of Civil Engineering, Год журнала: 2025, Номер unknown
Опубликована: Март 10, 2025
Язык: Английский
Journal of Materials Research and Technology, Год журнала: 2024, Номер 29, С. 2376 - 2395
Опубликована: Фев. 2, 2024
Cracks in concrete structures can significantly decrease their lifespan by exposing reinforcement to outside environment, leading degradation. To address this issue, self-healing techniques have been developed, including biomineralization-based-self healing, where bacteria are employed initiate microbially induced calcium precipitate (MICP), promoting the healing of cracks. This article explores extreme environmental conditions pH and temperature which reduce sustainability potential bacteria. Furthermore, it implementation using aimed at mitigating adverse effects environment on bacteria, thereby enhancing capabilities. Notably, studies found that mechanical strength be increased cell concentrations 105 108 cells/ml. Based review, is depends factors such as temperature, well methods concrete. Moreover, there exists a direct correlation between bacterial concentration alterations properties The incorporation leads increment properties, with enhancement up 42.8 %. Understanding interplay crucial optimizing biomineralization-based durability infrastructure.
Язык: Английский
Процитировано
39
Nature Reviews Microbiology, Год журнала: 2024, Номер 22(6), С. 345 - 359
Опубликована: Янв. 22, 2024
Язык: Английский
Процитировано
20
The Science of The Total Environment, Год журнала: 2024, Номер 947, С. 174553 - 174553
Опубликована: Июль 6, 2024
The self-healing bioconcrete, or bioconcrete as concrete containing microorganisms with capacities, presents a transformative strategy to extend the service life of structures. This technology harnesses biological capabilities specific microorganisms, such bacteria and fungi, which are integral material's capacity autonomously mend cracks, thereby maintaining structural integrity. review highlights complex biochemical pathways these organisms utilize produce healing compounds like calcium carbonate, how environmental parameters, pH, temperature, oxygen, moisture critically affect repair efficacy. A comprehensive analysis recently published peer-reviewed literature, contemporary experimental research forms backbone this focus on microbiological aspects process. assesses challenges facing including longevity microbial spores cost implications for large-scale implementation. Further, attention is given potential directions, investigating alternative agents optimizing environment support activity. culmination investigation call action integrating in construction broader scale, realizing its fortify infrastructure resilience sustainability.
Язык: Английский
Процитировано
19
Engineering materials, Год журнала: 2025, Номер unknown, С. 253 - 276
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Construction and Building Materials, Год журнала: 2023, Номер 409, С. 134108 - 134108
Опубликована: Ноя. 20, 2023
Crystalline admixture (CA) has garnered attention as a promising self-healing agent for cementitious composites. This paper aims to provide compressive review on the effects of CA behaviours and durability properties is in powder form, consisting Portland cement special chemicals stimulants. Since powder-form was directly mixed with mixture, addition no significant impact fresh concrete but enhances strength CA-cementitious Furthermore, activated by moisture, resulting production calcium-based products. In terms crack closure efficacy, specimens cured under wet/dry cycle demonstrated higher ratio than those water immersion or air exposure. Specimens chloride solution exhibited best healing recovery. However, reduced mechanical recoveries are observed exposed freeze–thaw cycles solution, while better found cycles. Overall, can reduce sorptivity, permeability, penetration, depth sodium ions offering favourable protection Although some composites have been explored, further studies required investigate potential shrinkage, ingress aggressive ions, carbonation, alkali-silica reaction (ASR). The application could be considered cost-effective approach inducing capability, given its affordable straightforward construction process.
Язык: Английский
Процитировано
18
Construction and Building Materials, Год журнала: 2024, Номер 439, С. 137238 - 137238
Опубликована: Июль 6, 2024
Язык: Английский
Процитировано
7
Developments in the Built Environment, Год журнала: 2024, Номер 17, С. 100331 - 100331
Опубликована: Янв. 14, 2024
This study explores the potential impact of natural soil on concrete crack self-healing in sub-surface structures. Three types pre-cracked cement mortar samples were prepared for laboratory experiments, with some inoculated bacterial healing agents, others supplemented nutrients to attract indigenous bacteria, and plain served as controls. The placed within saturated under two conditions: slightly organic sterilised soil. After 100 days, closure was evaluated through microscopic inspection, water absorption tests, SEM-EDX scanning. results indicated calcite precipitation surfaces across all samples, but varying ratios (16%–81%). Notably, most incubated exhibited an overall increase (up 59.4%) ratio compared those soil, highlighting microorganisms their microbial activity enhancing biogenic mineral thus protecting
Язык: Английский
Процитировано
6
Journal of Building Engineering, Год журнала: 2024, Номер 91, С. 109669 - 109669
Опубликована: Май 20, 2024
Язык: Английский
Процитировано
6
Microorganisms, Год журнала: 2023, Номер 11(8), С. 2076 - 2076
Опубликована: Авг. 12, 2023
Microbially influenced concrete corrosion (MICC) causes substantial financial losses to modern societies. Concrete with various environmental factors has been studied extensively over several decades. With the enhancement of public awareness on and economic impacts microbial corrosion, MICC draws increasingly attention. In this review, roles communities corresponding protective measures against are described. Also, current status research methodology discussed. Thus, review aims at providing insight into its mechanisms as well development protection possibilities.
Язык: Английский
Процитировано
12
Journal of Building Engineering, Год журнала: 2024, Номер 91, С. 109598 - 109598
Опубликована: Май 10, 2024
Язык: Английский
Процитировано
4