Exploration on the Biotechnological Aspect of the Ureolytic Bacteria for the Production of the Cementitious Materials—a Review

Sarayu, K.; Iyer, Nagesh R.; Murthy, A. Ramachandra

doi:10.1007/s12010-013-0686-0

Cited by 72 publications

(48 citation statements)

References 79 publications

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“…Sporosarcina pasteurii (also named Bacillus pasteurii ), Sporosarcina ureae , Bacillus sphaericus , and Bacillus megaterium belong to this group. They have been used in a number of studies for waterproofing and improving strength and durability aspects of porous and cracked concrete, as reviewed in 2010 by De Muynck et al, in 2013 by Pacheco‐Torgal and Labrincha, Phillips et al and Van Tittelboom and De Belie, in 2014 by Sarayu et al, in 2015 by Wong, and recently in 2017 by Joshi et al, Vijay et al, Souradeep et al, Han and Xing, and exhaustively by Al‐Salloum et al, (the latter review covering 255 literature references) and several recent reports …”

Section: Self‐healing Bioconcretementioning

confidence: 99%

A Review of Self‐Healing Concrete for Damage Management of Structures

Belie

Gruyaert

Al‐Tabbaa

et al. 2018

Adv Materials Inter

492

278

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The increasing concern for safety and sustainability of structures is calling for the development of smart self-healing materials and preventive repair methods. The appearance of small cracks (<300 µm in width) in concrete is almost unavoidable, not necessarily causing a risk of collapse for the structure, but surely impairing its functionality, accelerating its degradation, and diminishing its service life and sustainability. This review provides the state-ofthe-art of recent developments of self-healing concrete, covering autogenous or intrinsic healing of traditional concrete followed by stimulated autogenous healing via use of mineral additives, crystalline admixtures or (superabsorbent) polymers, and subsequently autonomous self-healing mechanisms, i.e. via, application of micro-, macro-, or vascular encapsulated polymers, minerals, or bacteria. The (stimulated) autogenous mechanisms are generally limited to healing crack widths of about 100-150 µm. In contrast, most autonomous self-healing mechanisms can heal cracks of 300 µm, even sometimes up to more than 1 mm, and usually act faster. After explaining the basic concept for each self-healing technique, the most recent advances are collected, explaining the progress and current limitations, to provide insights toward the future developments. This review addresses the research needs required to remove hindrances that limit market penetration of self-healing concrete technologies.

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Section: Self‐healing Bioconcretementioning

confidence: 99%

A Review of Self‐Healing Concrete for Damage Management of Structures

Belie

Gruyaert

Al‐Tabbaa

et al. 2018

Adv Materials Inter

492

278

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“…(6) (Chahal et al 2011;Dhami et al 2013a;Sarayu et al 2014). Potentially useful bacteria should possess high ureolytic efficiency, show alkalophilic growth at pH around 9, and no growth at all around pH 6.5, be non-pathogenic, and possess the ability to deposit calcite homogeneously on the substrate (Okwadha and Li 2010).…”

Section: Introductionmentioning

confidence: 99%

Isolation and identification of Pseudomonas azotoformans for induced calcite precipitation

Nonakaran

Pazhouhandeh

Keyvani

et al. 2015

World J Microbiol Biotechnol

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Biomineralization is a process by which living organisms produce minerals. The extracellular production of these biominerals by microbes has potential for various bioengineering applications. For example, crack remediation and improvement of durability of concrete is an important goal for engineers and biomineral-producing microbes could be a useful tool in achieving this goal. Here we report the isolation, biochemical characterization and molecular identification of Pseudomonas azotoformans, a microbe that produces calcite and which potentially be used to repair cracks in concrete structures. Initially, 38 bacterial isolates were isolated from soil and cements. As a first test, the isolates were screened using a urease assay followed by biochemical tests for the rate of urea hydrolysis, calcite production and the insolubility of calcite. Molecular amplification and sequencing of a 16S rRNA fragment of selected isolates permitted us to identify P. azotoformans as a good candidate for preparation of biotechnological concrete. This species was isolated from soil and the results show that among the tested isolates it had the highest rate of urea hydrolysis, produced the highest amount of calcite, which, furthermore was the most adhesive and insoluble. This species is thus of interest as an agent with the potential ability to repair cracks in concrete.

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“…The formation of the microgradient of alkaline pH and increased carbonate concentration around bacterial cell due to hydrolysis of urea follows with crystallization of calcium carbonate (Ferris et al 1996;Gollapudi et al 1995;Ivanov and Chu 2008;Sarayu et al 2014). Chemical precipitation of CaCO 3 from the calcium salt solution did not create the strength in the treated sample of sand .…”

Section: First Type Of Calcium-based Biocementation/ Biogroutingmentioning

confidence: 99%

Construction Biotechnology: a new area of biotechnological research and applications

Stabnikov

Ivanov

Chu

2015

World J Microbiol Biotechnol

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A new scientific and engineering discipline, Construction Biotechnology, is developing exponentially during the last decade. The major directions of this discipline are selection of microorganisms and development of the microbially-mediated construction processes and biotechnologies for the production of construction biomaterials. The products of construction biotechnologies are low cost, sustainable, and environmentally friendly microbial biocements and biogrouts for the construction ground improvement. The microbial polysaccharides are used as admixtures for cement. Microbially produced biodegradable bioplastics can be used for the temporarily constructions. The bioagents that are used in construction biotechnologies are either pure or enrichment cultures of microorganisms or activated indigenous microorganisms of soil. The applications of microorganisms in the construction processes are bioaggregation, biocementation, bioclogging, and biodesaturation of soil. The biotechnologically produced construction materials and the microbially-mediated construction technologies have a lot of advantages in comparison with the conventional construction materials and processes. Proper practical implementations of construction biotechnologies could give significant economic and environmental benefits.

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Exploration on the Biotechnological Aspect of the Ureolytic Bacteria for the Production of the Cementitious Materials—a Review

Cited by 72 publications

References 79 publications

A Review of Self‐Healing Concrete for Damage Management of Structures

A Review of Self‐Healing Concrete for Damage Management of Structures

Isolation and identification of Pseudomonas azotoformans for induced calcite precipitation

Construction Biotechnology: a new area of biotechnological research and applications

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