Review: Microbial induced mineralization of calcium carbonate for self-healing concrete

Elkhateeb, Waill A; Elnahas, Marwa O.; Daba, Ghoson M.

doi:10.13057/biofar/f190101

Cited by 5 publications

(1 citation statement)

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“…This study was initiated on assessing the self-healing of minor damages in a human body. This led to the development of bio-cement or bio-influenced self-healing concrete, which serves as a practical healing agent to stop crack growth (Elkhateeb et al 2021). This review aims to describe the state-of-the-art mechanisms/strategies involved in producing MICP through bacteria metabolism.…”

Section: Introductionmentioning

confidence: 99%

A significant review on the performance of microbial concrete in comportment of diverse nutrients

Palter,

Syeda,

Sambhana

et al. 2023

Multidiscip. Sci. J.

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Concrete is substantially a prerequisite material being used but as the year’s pass, the concrete structures due to external load application might be subjected to the inevitable crack formation that can degrade their durability and strength. The addition of bacteria and the supplementary calcium source creates a pervious layer over concrete fissures similar to calcite precipitation in sealing pores and micro-cracks in the concrete. This review exemplifies the usage of several species of calcite-precipitating, alkali-resistant Bacillus bacteria as crack healing agents and nutrients added for bacteria sustainability in the concrete and mortar at diverse age periods. Various strategies have been proposed to endow self-healing in concrete in past decades. This review summarizes the effect of micro-capsules, hydrogels, cellulose fiber, polymers, mineral admixtures and bacteria type when employed in cementitious materials. This study exuviates light on the advantages of bio minerals produced via bacteria metabolism that improves mechanical properties, durability parameters and microstructure behaviour. It can be summarized that the inclusion of bacteria in concrete and mortar improves its properties resulting in crack healing, making it more sustainable and reducing maintenance cost. Furthermore, research can be a promising investigation into the longevity of the bacteria for its extensive practical outcome-based application.

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Section: Introductionmentioning

confidence: 99%