Bio-induction and bioremediation of cementitious composites using microbial mineral precipitation – A review

Al-Salloum, Yousef; Hadi, Sarfaraz; Abbas, Husain; Almusallam, Tarek; Moslem, Mohamed A.

doi:10.1016/j.conbuildmat.2017.07.203

Cited by 84 publications

(38 citation statements)

References 194 publications

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“…(2015) . There are bacteria that can precipitate calcite to heal cracks in concretes, which enhances its durability . Hammes et al.…”

Section: Resultsmentioning

confidence: 99%

“…(2014) stated that traditional healing techniques such as epoxy injection, mesh plastering and grouting are those healing techniques, in which human effort is involved, while the self‐healing techniques are done without any human interference. There is also a new concept of bacterial mineral precipitation under biomimicking processes to prevent building materials deterioration and civil engineers should employ novel techniques of healing to upgrade the cementitious and concrete characteristics . Further, the technique MICP can also be employed in restoring “historical stone monuments” as mentioned by in a review article .…”

Section: Resultsmentioning

confidence: 99%

“…There is also a new concept of bacterial mineral precipitation under biomimicking processes to prevent building materials deterioration and civil engineers should employ novel techniques of healing to upgrade the cementitious and concrete characteristics . Further, the technique MICP can also be employed in restoring “historical stone monuments” as mentioned by in a review article . A frequent restoration of concrete crack is not an easy job and that is why, different techniques are in use.…”

Section: Resultsmentioning

confidence: 99%

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Self‐Healing of Cracks in Concrete Using Bacillus Strains Encapsulated in Sodium Alginate Beads

et al. 2020

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This research focused on the self‐healing of micro‐cracks in concrete by using different Bacillus strains. The encapsulation of strains in sodium alginate was protected with the bacterial mass, which prevented them from leaching. A viability test was performed to check the viability of bacteria in the highly alkaline environment. The encapsulated bacterial mix having 2–3% of total volume of concrete cubes was effective without compromising compressive strength. The calcium carbonate (CaCO3) precipitation was observed under urease activity. The SEM (Scanning Electron Microscope) revealed the direct involvement of ureolytic bacteria in CaCO3 precipitation. A 16% increase in compressive strength in concrete and significant healing was achieved with Bacillus Subtilis. However, with Bacillus Anthracis, only 6% increase in the concrete strength was achieved. Moreover, the Bacillus Pasteurii did not give effective results. Bacillus Subtilis provided better results than the other strains. The bacterial culture in sodium alginate beads within 2–3% was optimum for compressive strength and self‐healing of cracks.

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“…(2015) . There are bacteria that can precipitate calcite to heal cracks in concretes, which enhances its durability . Hammes et al.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Self‐Healing of Cracks in Concrete Using Bacillus Strains Encapsulated in Sodium Alginate Beads

et al. 2020

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“…Limestone, or calcium carbonate, is a concrete compatible material that is perfectly suitable for sealing (waterproofing) of cracks in concrete. Several research groups worldwide have developed bacteria-based healing agents to enhance the self-healing capacity of cement pasts, mortars and concrete [7][8][9][10][11][12]. Pioneering and lab-based research by the Delft research group has shown that lactate-based organic compounds like calcium lactate and lactide-polymers) are suitable carbon sources for the bacteria and that these compounds are furthermore concrete compatible in the sense that they as additive, within limits, do not negatively affect strength development of concrete [7, 8 13,14].…”

Section: Autonomous Crack Repair By Limestoneforming Bacteriamentioning

confidence: 99%

Bacteria-based self-healing concrete: evaluation of full scale demonstrator projects

Mors¹,

Jonkers

2020

RILEM Tech Lett

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Bacteria-based self-healing concrete is an innovative concrete that contains a self-healing agent that provides the material with enhanced autonomous crack-sealing performance. A specific type of this concrete, based on a healing agent composed of bacterial spores and lactate as carbon source, has been developed and applied by the Delft University of Technology for over ten years. Under laboratory conditions it was proven that, depending on the dosage of healing agent, self-healing of cracks up to 0.8 mm widths occurs. As such the material potentially allows reduction of steel reinforcement used for crack width limitation in watertight constructions. Application of self-healing concrete would therefore not only result in a reduction of costs but also in improvement of environmental performance (lower CO2 footprint) and ease of in situ casting due to reduction of use of steel in waterproof applications. However, according to the EN 1990 Eurocode (Basis of structural design), customary application of a novel type of concrete must be preceded by full scale demonstrators proving evidence for safe and functional performance. In this contribution we portray full scale application of bacteria-based self-healing agent as developed by the Delft research group in two repair mortar-and in two concrete construction demonstrator projects. These demonstrator projects show that addition of the bacteria-based self-healing agent to the concrete mix is safe as no negative side effects on construction performance was observed. However, it also proved difficult to find evidence for increased crack-healing performance as cracking in the demonstrator constructions hardly occurred. In further full scale demonstrators we therefore plan to drastically reduce amount of crack width-restraining reinforcement to show crackhealing capacity and potential to save on use of reinforcement steel in watertight concrete constructions.

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“…There are few studies on the use of MICP to solidify aeolian sandy soil and improve wind erosion resistance performance, and there is no practical example. Because the calcium carbonate generated by this method has a certain degree of adhesion, it can be used to repair and reinforce concrete cracks (Hao, Cheng, Hao, & Shahin, ; Jonkers, Thijssen, Muyzer, Copuroglu, & Schlangen, ), repair limestone (Castanier, Metayer‐Levrel, & Perthuisot, ; Lors, Ducasse‐Lapeyrusse, Gagné, & Damidot, ; Rodriguez‐Navarro, Rodriguez‐Gallego, Chekroun, et al, ; Tiano, ) and may be applied in the restoration of historic buildings (Al‐Salloum, Hadi, Abbas, Almusallam, & Moslem, ; Yang, Cheng, & Li, ). In addition, some scholars have suggested that this technology can be used in applications such as the removal of heavy metals, reinforcement of soils, slopes and foundations, slope maintenance, the establishment of sand banks, and even reduction desertification (Gat, Ronen, & Tsesarsky, ; Seifan, Samani, & Berenjian, ; Van Paassen, Daza, Staal, et al, ).…”

Section: Introductionmentioning

confidence: 99%

Increasing wind erosion resistance of aeolian sandy soil by microbially induced calcium carbonate precipitation

et al. 2018

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Wind erosion of aeolian sandy soil can cause serious land degradation and other environmental problems, and thus its prevention and control is very important. However, there has not been a very effective way to prevent this severe wind erosion until now, and traditional measures such as mechanical methods, chemical sand‐fixing methods, and agronomic methods also have many disadvantages. The main objective of this study is to evaluate feasibility of microbially induced calcite precipitation (MICP) as a novel soil‐strengthening technique, to cement aeolian sandy soil, and reduce wind erosion risk. For this purpose, aeolian sandy soil was cemented with Sporosarcina pasteurii through MICP technique, and the physical and mechanical properties and wind erosion resistance of cemented aeolian sandy soil were tested. The results show that wind erosion resistance of aeolian sandy soil can be effectively improved by spraying S. pasteurii solution and cementing solution (equal concentration of urea and calcium chloride mixture) into it from the surface, and the cemented aeolian sandy soil had good wind erosion resistance. Finally, morphology of precipitated CaCO3 crystals was studied using scanning electron microscope, optical microscope, and X‐ray diffraction. The calcium carbonate crystals produced in aeolian sandy soil were calcite, and the calcium carbonate crystals had polyhedral, spherical, or flower clusters crystal morphology. The results of this study demonstrate an effective way to use MICP technology to cement aeolian sandy soil and prevent wind erosion, and provide a new way for wind erosion prevention.

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Bio-induction and bioremediation of cementitious composites using microbial mineral precipitation – A review

Cited by 84 publications

References 194 publications

Self‐Healing of Cracks in Concrete Using Bacillus Strains Encapsulated in Sodium Alginate Beads

Self‐Healing of Cracks in Concrete Using Bacillus Strains Encapsulated in Sodium Alginate Beads

Bacteria-based self-healing concrete: evaluation of full scale demonstrator projects

Increasing wind erosion resistance of aeolian sandy soil by microbially induced calcium carbonate precipitation

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