2018
DOI: 10.1155/2018/5153041
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Self‐Healing of Concrete Cracks by Ceramsite‐Loaded Microorganisms

Abstract: Protective carrier is essential for the self-healing of concrete cracks by microbially induced CaCO 3 precipitation, owing to the harsh conditions in concrete. In this paper, porous ceramsite particles are used as microbial carrier. Heat treatment and NaOH soaking are first employed to improve the loading content of the ceramsite. e viability of bacterial spores is assessed by urea decomposition measurements. en, the self-healing efficiency of concrete cracks by spores is evaluated by a series of tests includi… Show more

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Cited by 67 publications
(31 citation statements)
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“…With the increase in environmental protection awareness, these environmentally unfriendly repair materials must be eliminated. In addition, the repair effect of these substances is not very significant due to compatibility issues with the concrete substrate, so researchers from various countries have been working toward environmentally friendly and sustainable repair of biological systems [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”
Section: Introductionmentioning
confidence: 99%
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“…With the increase in environmental protection awareness, these environmentally unfriendly repair materials must be eliminated. In addition, the repair effect of these substances is not very significant due to compatibility issues with the concrete substrate, so researchers from various countries have been working toward environmentally friendly and sustainable repair of biological systems [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”
Section: Introductionmentioning
confidence: 99%
“…Many studies have pointed out that small cracks in concrete can be repaired by themselves based on the continuous hydration of cement or other physical and mechanical behaviors [5,6,10,11,13,14]. In the field of concrete science, this phenomenon is often called "autogenous healing" or "concrete self-healing."…”
Section: Introductionmentioning
confidence: 99%
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“…The performance of healing cracks can be enhanced by various parameters viz: biological agents [15][16][17][18][19][20][21], chemical agents [22], encapsulated capsules [23][24][25][26][27] and pozolonic materials [28]. There is an improvement in lifetime of concrete structure by crack healing.…”
Section: Introductionmentioning
confidence: 99%