Application of microbial biocementation to improve the physico-mechanical properties of sandy soil

Sharaky, Abbas M.; Mohamed, Naglaa S.; Elmashad, Mohie Eldin; Shredah, Nehad M.

doi:10.1016/j.conbuildmat.2018.09.159

Cited by 50 publications

(20 citation statements)

References 28 publications

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“…Methods to apply bacteria and cementation solutions into sand columns affect the MICP performance. Similar study was also carried out by Sharaky et al and applied biocementation solution including Sporosarcina pasteurii for consolidation of sand columns [29]. Minto et al [30] used Sporosarcina pasteurii for MICP on marble grains in columns and found that only the top to middle portion of the columns were solid enough.…”

Section: Hcomentioning

confidence: 64%

Insights into the Current Trends in the Utilization of Bacteria for Microbially Induced Calcium Carbonate Precipitation

et al. 2020

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Nowadays, microbially induced calcium carbonate precipitation (MICP) has received great attention for its potential in construction and geotechnical applications. This technique has been used in biocementation of sand, consolidation of soil, production of self-healing concrete or mortar, and removal of heavy metal ions from water. The products of MICP often have enhanced strength, durability, and self-healing ability. Utilization of the MICP technique can also increase sustainability, especially in the construction industry where a huge portion of the materials used is not sustainable. The presence of bacteria is essential for MICP to occur. Bacteria promote the conversion of suitable compounds into carbonate ions, change the microenvironment to favor precipitation of calcium carbonate, and act as precipitation sites for calcium carbonate crystals. Many bacteria have been discovered and tested for MICP potential. This paper reviews the bacteria used for MICP in some of the most recent studies. Bacteria that can cause MICP include ureolytic bacteria, non-ureolytic bacteria, cyanobacteria, nitrate reducing bacteria, and sulfate reducing bacteria. The most studied bacterium for MICP over the years is Sporosarcina pasteurii. Other bacteria from Bacillus species are also frequently investigated. Several factors that affect MICP performance are bacterial strain, bacterial concentration, nutrient concentration, calcium source concentration, addition of other substances, and methods to distribute bacteria. Several suggestions for future studies such as CO2 sequestration through MICP, cost reduction by using plant or animal wastes as media, and genetic modification of bacteria to enhance MICP have been put forward.

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Section: Hcomentioning

confidence: 64%

Insights into the Current Trends in the Utilization of Bacteria for Microbially Induced Calcium Carbonate Precipitation

et al. 2020

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“…His experimental results showed that the uniaxial compressive strength of the sand sample treated by Bacillus pasteurii was as high as 5.8 MPa. Sharaky et al [19] found that Sporosarcina pasteurii plays an important role in the sand biocementation process, and the research results showed that the compressive strength of sandy soil increased due to the precipitation of calcium carbonate by the bacterial activity.…”

Section: Introductionmentioning

confidence: 99%

Reducing Compressibility of the Expansive Soil by Microbiological‐Induced Calcium Carbonate Precipitation

Zhang

Xiao

et al. 2021

Advances in Civil Engineering

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Most of the research studies on the improvement of expansive soils are focused on reducing their expansive properties; however, there are few studies on the impact of the soil compressibility after the improvement. In this paper, through indoor high-pressure consolidation tests, the recent microbial-induced calcium carbonate precipitation (MICP) technology is studied to improve the compression characteristics of the expansive soil. The significant effect of different microbial concentrations (achieved by different number of treatments) on the compression deformation is revealed with the hyperbolic function that involves two parameters with clear physical meanings. In particular, after 6 times of treatment with the microbial solution, the compression characteristics of the expansive soil reach the best improvement effect; continuing to increase the number of microbial treatments is, otherwise, not conducive to improving the soil compression performance. Also, a dramatical increase of the structural strength of the microbial-treated expansive soil is presented and investigated. Moreover, we performed a scanning electron microscope (SEM) experiment and confirmed the existence of crystals due to mineralization. This study shows that MICP is an effective and environmentally friendly means of reducing the compressibility of the expansive soil.

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“…On the other hand, fungi appear as the potent perfect candidate for this mission (Martuscelli et al 2020). Interestingly, many studies have also reported the ability of microbial approach to improve the physicomechanical characteristics of concrete, cement, and mortar (Abo-El-Enein et al 2013;Sharaky et al 2018;Girometta et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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

Elkhateeb

Elnahas

Daba

2021

Asian J Nat Prod Biochem

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Abstract. Elkhateeb WA, Elnahas MO, Daba GM. 2021. Review: Microbial induced mineralization of calcium carbonate for self-Healing concrete. Asian J Nat Prod Biochem 19: 1-9. Low-cost solutions achieving concrete self-healing are attracting researchers attention. Generally, concrete self-healing mechanism has been so far accomplished by three approaches: autogenous healing, encapsulation of polymeric material, and microbial induced mineralization of calcium carbonate. Microbial approach seems like an attractive potent, relatively cheap way to achieve concrete self-healing. Hence, this review elucidates the microbial concrete self-healing mechanisms, and compare the roles of fungal and bacterial mediated self-healing concrete.

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Application of microbial biocementation to improve the physico-mechanical properties of sandy soil

Cited by 50 publications

References 28 publications

Insights into the Current Trends in the Utilization of Bacteria for Microbially Induced Calcium Carbonate Precipitation

Insights into the Current Trends in the Utilization of Bacteria for Microbially Induced Calcium Carbonate Precipitation

Reducing Compressibility of the Expansive Soil by Microbiological‐Induced Calcium Carbonate Precipitation

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

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