Application of hydrogel encapsulated carbonate precipitating bacteria for approaching a realistic self-healing in concrete

J. Y. Wang; D. Snoeck; S. Van Vlierberghe; W. Verstraete; N. De Belie

doi:10.1016/j.conbuildmat.2014.06.018

Application of hydrogel encapsulated carbonate precipitating bacteria for approaching a realistic self-healing in concrete

J. Y. Wang
, D. Snoeck
, S. Van Vlierberghe
, W. Verstraete
, N. De Belie

Research output: Contribution to journal › Article › peer-review

529 Scopus citations

Abstract

Bacterial-based self-healing is a promising solution for sustainable concrete maintenance. In this study, bacterial spores were first encapsulated into hydrogels and then were incorporated into specimens to investigate their healing efficiency. The precipitation of CaCO₃ by hydrogel-encapsulated spores was demonstrated by Thermogravimetric analysis (TGA). The mortar specimens with hydrogel-encapsulated spores, showed a distinct self-healing superiority: the maximum healed crack width was about 0.5 mm and the water permeability was decreased by 68% in average. Other specimens in non-bacterial series had maximum healed crack width of 0-0.3 mm and the average water permeability was decreased by 15-55% only.

Original language	English
Pages (from-to)	110-119
Number of pages	10
Journal	Construction and Building Materials
Volume	68
DOIs	https://doi.org/10.1016/j.conbuildmat.2014.06.018
State	Published - 15 Oct 2014
Externally published	Yes

Keywords

Bacteria
Crack
Hydrogels
Self-healing

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10.1016/j.conbuildmat.2014.06.018

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title = "Application of hydrogel encapsulated carbonate precipitating bacteria for approaching a realistic self-healing in concrete",

abstract = "Bacterial-based self-healing is a promising solution for sustainable concrete maintenance. In this study, bacterial spores were first encapsulated into hydrogels and then were incorporated into specimens to investigate their healing efficiency. The precipitation of CaCO3 by hydrogel-encapsulated spores was demonstrated by Thermogravimetric analysis (TGA). The mortar specimens with hydrogel-encapsulated spores, showed a distinct self-healing superiority: the maximum healed crack width was about 0.5 mm and the water permeability was decreased by 68\% in average. Other specimens in non-bacterial series had maximum healed crack width of 0-0.3 mm and the average water permeability was decreased by 15-55\% only.",

keywords = "Bacteria, Crack, Hydrogels, Self-healing",

author = "Wang, \{J. Y.\} and D. Snoeck and \{Van Vlierberghe\}, S. and W. Verstraete and \{De Belie\}, N.",

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journal = "Construction and Building Materials",

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AU - Wang, J. Y.

AU - Snoeck, D.

AU - Van Vlierberghe, S.

AU - Verstraete, W.

AU - De Belie, N.

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Bacterial-based self-healing is a promising solution for sustainable concrete maintenance. In this study, bacterial spores were first encapsulated into hydrogels and then were incorporated into specimens to investigate their healing efficiency. The precipitation of CaCO3 by hydrogel-encapsulated spores was demonstrated by Thermogravimetric analysis (TGA). The mortar specimens with hydrogel-encapsulated spores, showed a distinct self-healing superiority: the maximum healed crack width was about 0.5 mm and the water permeability was decreased by 68% in average. Other specimens in non-bacterial series had maximum healed crack width of 0-0.3 mm and the average water permeability was decreased by 15-55% only.

AB - Bacterial-based self-healing is a promising solution for sustainable concrete maintenance. In this study, bacterial spores were first encapsulated into hydrogels and then were incorporated into specimens to investigate their healing efficiency. The precipitation of CaCO3 by hydrogel-encapsulated spores was demonstrated by Thermogravimetric analysis (TGA). The mortar specimens with hydrogel-encapsulated spores, showed a distinct self-healing superiority: the maximum healed crack width was about 0.5 mm and the water permeability was decreased by 68% in average. Other specimens in non-bacterial series had maximum healed crack width of 0-0.3 mm and the average water permeability was decreased by 15-55% only.

KW - Bacteria

KW - Crack

KW - Hydrogels

KW - Self-healing

UR - https://www.scopus.com/pages/publications/84904350940

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DO - 10.1016/j.conbuildmat.2014.06.018

M3 - 文章

AN - SCOPUS:84904350940

SN - 0950-0618

VL - 68

SP - 110

EP - 119

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Application of hydrogel encapsulated carbonate precipitating bacteria for approaching a realistic self-healing in concrete

Abstract

Keywords

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