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Combined physical and biological gel-based healing of cementitious materials

Harbottle, Michael John ORCID:, Zhang, Junlin and Gardner, Diane Ruth ORCID: 2013. Combined physical and biological gel-based healing of cementitious materials. Presented at: Fourth International Conference on Self-Healing Materials (ICSHM2013), Ghent, Belgium, 16-18 June 2013. Proceedings of the Fourth International Conference on Self-Healing Materials. Ghent: Universiteit Gent, pp. 207-210.

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The outcomes of a preliminary experimental programme into a gel-based healing system that allows immediate healing of cementitious materials followed by longer term development of robust healing through biological processes are reported. Alginate gels protect and maintain the viability of encapsulated microorganisms and have been used for protection of these and other cargoes in various situations. Soluble alginates form relatively strong, stable gels on contact with cations such as calcium, and can form gels on contact with cementitious materials. Calcium alginate gels were formed both in isolation and in contact with cementitious surfaces and assessed for their ability to protect encapsulated microorganisms (Sporosarcina pasteurii) from the harsh cementitious environment and their subsequent ability to generate calcium carbonate within the gel structure via urea biodegradation.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Publisher: Universiteit Gent
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Last Modified: 24 Oct 2022 11:30

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