Application of bacterial biomass in biocementation process to enhance the mechanical and durability properties of concrete

Smitha, Muraleedharan Pillai; Suji, D.; Shanthi, M.; Adesina, Adeyemi

doi:10.1016/j.clema.2022.100050

Cited by 13 publications

(2 citation statements)

References 34 publications

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“…The optimal concentration of B.megaterium (10 5 cells/mL) can be employed to increase mechanical and durability qualities. The chloride ion penetration and coefficient of water permeability of concrete are 26.8% and 98.7% lower, than that of control concrete (Smitha M. P et al, 2022). This section shows that bacterial inclusion in concrete improves the durability parameters and has widespread applications for self-healing.…”

Section: Types Of Bacteriamentioning

confidence: 81%

A review of durability improvement in concrete due to bacterial inclusions

Bandlamudi

Kar²,

Dutta³

2023

Front. Built Environ.

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Since the invention of industrially produced Portland cement in the nineteenth century, concrete has been the world’s most frequently used construction material. Because of the significant CO2 emissions produced during cement manufacture and concrete maintenance and repair costs, sustainably improving concrete durability has become a topic of concern. Bacterial self-healing is a unique method that uses CaCO3 precipitation to repair cracks in concrete, thereby improving the structure’s durability. This review highlights the effect of bacterial treatment on concrete durability. The permeation properties, water absorption, and mechanical properties are assessed. Emphasis is laid on the selection of bacteria and bacteria nutrients. The paper overviews the morphological analysis of CaCO3 precipitation by bacterial concrete. Despite the benefits of bacterial technology in concrete, numerous critical concerns remain unresolved. Further investigation on nutrients is required to develop a multi-nutrient system that will improve the efficiency of bacterial precipitation since a good combination of low-cost nutrients would reduce the total cost of bacterial concrete.

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Section: Types Of Bacteriamentioning

confidence: 81%

A review of durability improvement in concrete due to bacterial inclusions

Bandlamudi

Kar²,

Dutta³

2023

Front. Built Environ.

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“…Smitha et al [75] investigated the influence of Bacillus megaterium on the mechanical and durability properties of concrete. Based on the outcome of the study, it was found that the induction of B. megaterium into concrete mixtures can be used to improve the mechanical and durability properties of concrete.…”

Section: Mechanical Properties Durability and Analysis Methodsmentioning

confidence: 99%

Self-Healing Concrete: Concepts, Energy Saving and Sustainability

et al. 2023

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The production of cement accounts for 5 to 7% of carbon dioxide emissions in the world, and its broad-scale use contributes to climate imbalance. As a solution, biotechnology enables the cultivation of bacteria and fungi for the synthesis of calcium carbonate as one of the main constituents of cement. Through biomineralization, which is the initial driving force for the synthesis of compounds compatible with concrete, and crystallization, these compounds can be delivered to cracks in concrete. Microencapsulation is a method that serves as a clock to determine when crystallization is needed, which is assisted by control factors such as pH and aeration. The present review addresses possibilities of working with bioconcrete, describing the composition of Portland cement, analysis methods, deterioration, as well as environmental and energetic benefits of using such an alternative material. A discussion on carbon credits is also offered. The contents of this paper could strengthen the prospects for the use of self-healing concrete as a way to meet the high demand for concrete, contributing to the building of a sustainable society.

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