Microbial calcite, a bio-based smart nanomaterial in concrete remediation

Bang, S.; Lippert, Jürgen; Yerra, U.; Mulukutla, S.; Ramakrishnan, V.

doi:10.1080/19475411003593451

Cited by 144 publications

(71 citation statements)

References 21 publications

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“…It is known that bacteria sporulate when they cease activity and leave small holes that weaken the more compact specimens. This effect has been reported by a previous research on mortar (see (7)) and may be supported by the fact that the amount of bacteria used is over the maximum proposed by other authors (see (7,13)). In this line, the larger pores of the specimens produced with soil mixture "B" caused the holes left by the sporulation of bacteria to be irrelevant.…”

Section: Effect Of Particle Size Distributionsupporting

confidence: 85%

“…Controversially, Bang et al (11) and Bachmeier et al (12) suggested that bio-deposited calcite might contribute to an increase in the compressive strength, yet it would not act as a binder, and thus the encapsulation would not have a negative effect. Later, Bang et al (13) studied the durability and mechanical properties of mortars which included encapsulated bacteria and concluded that the maximum concentration of Bacillus Pasteurii should be 6x10 8 cell/cm 3 . Finally, Jonkers (14) and Wang et al (15) used porous expanded clay particles and melamine, respectively, to encapsulate bacteria, prolonging their activity period and making it possible to mix them in fresh concrete without damaging the cells.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens

Bernat-Masó¹,

Gil²,

Escrig³

et al. 2018

Mater. construcc.

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Microbial biodeposition of calcite induction for improving the performance of rammed earth is a research area that must be analysed in a representative environment. This analysis must consider the compaction force, particle size distribution and curing process as production variables. This paper investigates the effects of adding specific bacteria, Sporosarcina Pasteurii, into compressed earth cubes and the effect of production variables. Uniaxial compressive tests and direct shear tests have been conducted for 80 specimens. The results indicate that calcite precipitation interacts with the drying process of clay/silt resulting in reducing the compressive strength, the apparent cohesion and the friction angle. Finally, bacterial activity, which is more likely in samples cured in a high humidity environment, tends to reduce the dilatancy effect. RESUMEN: Efecto de la Sporosarcina Pasteurii en las propiedades resistentes de especímenes de tierra comprimida.Inducir la biodeposición microbiana de calcita para mejorar las prestaciones de la tapia es una línea de investigación que necesita ser analizada en condiciones representativas y teniendo en cuenta variables de producción como la fuerza de compactación, la granulometría o el curado a diferentes humedades. Se estudia el efecto de añadir Sporosarcina Pasteurii en cubos de tierra comprimida y la influencia de estas variables de producción. Se han realizado ensayos de compresión simple y corte directo sobre 80 especímenes producidos con dos niveles de compactación y dos granulometrías. Los resultados indican que la precipitación de calcita interactúa con el proceso de secado de los limos/arcillas dando como resultado una reducción de la resistencia a compresión, de la cohesión aparente y del ángulo de fricción. Finalmente, la actividad bacteriana, más probable en las muestras curadas en un entorno de alta humedad, tiende a reducir el efecto de la dilatancia.PALABRAS CLAVE: Carbonato cálcico; Material orgánico; Curado; Resistencia a la Compresión; Caracterización ORCID ID: E. Bernat-Masó

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Section: Effect Of Particle Size Distributionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens

Bernat-Masó¹,

Gil²,

Escrig³

et al. 2018

Mater. construcc.

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“…In the case of biologically induced precipitation, the environmental conditions have a large influence, for example, in the case of calcium carbonate production by bacteria, which is determined by calcium concentration, dissolved inorganic carbon concentration, pH and the availability of nucleation sites (De Muynck et al, 2010;Rodriguez-Navarro et al, 2012). Calcium carbonate precipitation by Sporosarcina pasteurii decreased water uptake, permeability and chloride penetration, enhancing the durability of concrete structures (Bang et al, 2010;Achal et al, 2011). In view of the conservation of archeological and historical sites and structures, carbonatogenic bacteria have successfully been used to protect limestone and concrete against corrosion as well (Le Métayer- Ettenauer et al, 2011).…”

Section: Stone Corrosion Inhibition Using Microbially Based Techniquesmentioning

confidence: 99%

The dual role of microbes in corrosion

2014

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Corrosion is the result of a series of chemical, physical and (micro) biological processes leading to the deterioration of materials such as steel and stone. It is a world-wide problem with great societal and economic consequences. Current corrosion control strategies based on chemically produced products are under increasing pressure of stringent environmental regulations. Furthermore, they are rather inefficient. Therefore, there is an urgent need for environmentally friendly and sustainable corrosion control strategies. The mechanisms of microbially influenced corrosion and microbially influenced corrosion inhibition are not completely understood, because they cannot be linked to a single biochemical reaction or specific microbial species or groups. Corrosion is influenced by the complex processes of different microorganisms performing different electrochemical reactions and secreting proteins and metabolites that can have secondary effects. Information on the identity and role of microbial communities that are related to corrosion and corrosion inhibition in different materials and in different environments is scarce. As some microorganisms are able to both cause and inhibit corrosion, we pay particular interest to their potential role as corrosion-controlling agents. We show interesting interfaces in which scientists from different disciplines such as microbiology, engineering and art conservation can collaborate to find solutions to the problems caused by corrosion.

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“…Two-dimensional models of field treatment patterns have explored the efficacy of bioaugmentation compared with biostimulation, and linkages between microbial distribution, ureolysis activity, shear wave velocity and total precipitated calcite Martinez, 2012). Scale model tests have demonstrated the effectiveness of MICP in reducing wind-and water-induced erosion (Bang et al, 2011), improving resistance to liquefaction (Inagaki et al, 2011b;Montoya et al, 2013), creating impermeable crusts for catchment facilities Chu et al, 2012), healing/stabilising cracks in concrete and masonry (Ramachandran et al, 2001;Bang et al, 2010;Yang et al, 2011), treating waste (Chu et al, 2009), immobilising heavy metals (Fujita et al, 2004(Fujita et al, , 2008(Fujita et al, , 2010Hamdan et al, 2011a;Li et al, 2011), and performing shallow carbon sequestration (Manning, 2008;Renforth et al, 2009Renforth et al, , 2011Washbourne et al, 2012). MICP has also been shown to increase cone tip resistance (Burbank et al, 2012b).…”

Section: Microbially Induced Calcite Precipitationmentioning

confidence: 99%

Biogeochemical processes and geotechnical applications: progress, opportunities and challenges

DeJong¹,

Soga²,

Kavazanjian³

et al. 2013

Géotechnique

626

144

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Consideration of soil as a living ecosystem offers the potential for innovative and sustainable solutions to geotechnical problems. This is a new paradigm for many in geotechnical engineering. Realising the potential of this paradigm requires a multidisciplinary approach that embraces biology and geochemistry to develop techniques for beneficial ground modification. This paper assesses the progress, opportunities, and challenges in this emerging field. Biomediated geochemical processes, which consist of a geochemical reaction regulated by subsurface microbiology, currently being explored include mineral precipitation, gas generation, biofilm formation and biopolymer generation. For each of these processes, subsurface microbial processes are employed to create an environment conducive to the desired geochemical reactions among the minerals, organic matter, pore fluids, and gases that constitute soil. Geotechnical applications currently being explored include cementation of sands to enhance bearing capacity and liquefaction resistance, sequestration of carbon, soil erosion control, groundwater flow control, and remediation of soil and groundwater impacted by metals and radionuclides. Challenges in biomediated ground modification include upscaling processes from the laboratory to the field, in situ monitoring of reactions, reaction products and properties, developing integrated biogeochemical and geotechnical models, management of treatment by-products, establishing the durability and longevity/reversibility of the process, and education of engineers and researchers.

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Microbial calcite, a bio-based smart nanomaterial in concrete remediation

Cited by 144 publications

References 21 publications

Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens

Effect of Sporosarcina Pasteurii on the strength properties of compressed earth specimens

The dual role of microbes in corrosion

Biogeochemical processes and geotechnical applications: progress, opportunities and challenges

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