Self-healing of cracks in concrete via bacterial aerobic metabolic conversion of organic compounds

Henk Jonkers, Renee Mors, Lupita Sierra Beltran, Eirini Tziviloglou, Virginie Wiktor

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Self-healing of cracks in concrete can be achieved by application of bacteria which metabolically convert organic compounds under aerobic conditions yielding limestone. Added to the concrete mix as part of a healing agent, bacteria can, via metabolic activity resulting in limestone formation, seal cracks of up to 0.8mm width resulting in waterproofing and increased frost damage resistance of the concrete. Besides increasing the autogenous crack healing capacity of concrete, these bacteria can also be applied to improve bond strength of repair mortar and act as limestone producing agent in liquid concrete repair systems. This paper will review current state-of-the art bacteria-based self-healing concrete technologies investigated and applied by the Delft University research group specifically using bacteria which yield limestone after aerobic metabolic conversion of organic compounds under alkaline conditions.
Original languageEnglish
Title of host publicationInternational RILEM Conference on Microorganisms-Cementitious Materials Interactions
EditorsV. Wiktor, H. Jonkers, A. Bertron
PublisherRilem
Pages115-131
VolumeRILEM Proceedings Pro 102
ISBN (Electronic)978-2-35158-160-5
Publication statusPublished - 2016
EventInternational Conference on Microorganisms-Cementitious Materials Interactions 2016 - Delft, Netherlands
Duration: 23 Jun 201623 Jun 2016
http://www.proceedings.com/33855.html

Conference

ConferenceInternational Conference on Microorganisms-Cementitious Materials Interactions 2016
CountryNetherlands
CityDelft
Period23/06/1623/06/16
Internet address

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