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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Petrov, R. H. | Madrid |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Ivaškė, Augusta
Vilnius Gediminas Technical University
in Cooperation with on an Cooperation-Score of 37%
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article
Prolonging Bacterial Viability in Biological Concrete: Coated Expanded Clay Particles
Abstract
<jats:p>One of the biggest challenges in the development of a biological self-healing concrete is to ensure the long-term viability of bacteria that are embedded in the concrete. In the present study, a coated expanded clay (EC) is investigated for its potential use as a bacterial carrier in biological concrete. Eight different materials for coatings were selected considering cost, workability and accessibility in the construction industry. Long-term (56 days) viability analysis was conducted with a final evaluation of each coating performance. Our results indicate that healing efficiency in biological concrete specimens is strongly related to viable bacteria present in the healing agent. More viable bacteria-containing specimens exhibited a higher crack closure ratio. Our data suggest that the additional coating of EC particles improves long-term bacterial viability and, consequently, provides efficient crack healing in biological concrete.</jats:p>