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Bio-based microstructural effects in view of durability of concrete and concrete structures



Author(s): N. de Belie
Paper category: conference
Book title: Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. van Breugel, Wei Sun and Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 51 - 64
Total Pages: 14
Language: English


Abstract: Many engineers have been inspired by Nature in their search for the most efficient design. Similarly, material scientists have proposed bio-based techniques for improvement of the properties of engineering materials. Microbially induced carbonate precipitation is a strategy that has shown its potential for bioremediation, modification of the properties of soil, generation of a biological binder, consolidation and protection of stone, precipitation of a protective layer on concrete, remediation of cracks, and self-healing of cementitious materials. In this paper, especially the effects on the microstructure of concrete are highlighted. Also the use of concrete as substrate for living walls or vegetation on embankments, and the effects of biodegradation on microstructure are briefly treated.
Furthermore, the use of microbial extracellular polysaccharides for polymer modification of concrete, and the production of biocidal or catalytic particles on a microbial carrier, is showing potential for the future.


Online publication: 2012-07-05
Publication Type: full_text
Public price (Euros): 0.00