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The requirements for autonomic microbiologically-induced calcite-precipitation in concrete


Reference:

Sharma, T., Alazhari, M., Cooper, R., Heath, A. and Paine, K., 2015. The requirements for autonomic microbiologically-induced calcite-precipitation in concrete. In: Fifth International Conference on Self-Healing Materials, 2015-06-22 - 2015-06-24, North Carolina.

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http://icshm2015.pratt.duke.edu/sites/icshm2015.pratt.duke.edu/files/u9/ICSHM_attendee_brochure_0.pdf

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Abstract

This paper addresses the complex problem of using microbiologically-induced calcite-precipitation as a means of autonomic self-healing of concrete and describes the requirements for the encapsulated bacteria, precursors and nutrients. The paper discusses the need to use copious spore-forming alkaliphilic bacteria that germinate relatively quickly and considers the kinetics of microbiologically-induced calcite-precipitation. Issues relating to pH and temperature are also discussed. The paper also considers the compatibility of the nutrients and organic precursors with concrete. It is concluded that whilst the encapsulation of bacteria, nutrients and organic precursors that lead to microbiologically-induced calcite-precipitation is readily achievable, optimisation of the process requires further biological and engineering research. Some key areas of further fundamental research are highlighted.

Details

Item Type Conference or Workshop Items (Paper)
CreatorsSharma, T., Alazhari, M., Cooper, R., Heath, A. and Paine, K.
Related URLs
URLURL Type
http://icshm2015.pratt.duke.edu/sites/icshm2015.pratt.duke.edu/files/webform/extendedabstracts/ICSHM2015%20extended%20abstract_263_Paine.pdfFree Full-text
Uncontrolled Keywordsconcrete,self-healing,bacteria,precursors,germination
DepartmentsFaculty of Science > Biology & Biochemistry
Faculty of Engineering & Design > Architecture & Civil Engineering
Research CentresBRE Centre in Innovative Construction Materials
RefereedYes
StatusPublished
ID Code46347

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