Titre :

Bioprecipitation of a calcium carbonate – Biofilm composite on the surface of concrete for the maintenance of nuclear reactor enclosures

Auteur(s) :

Lors, C. [Auteur]
Centre for Materials and Processes [CERI MP - IMT Nord Europe]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Damidot, Denis [Auteur]
Centre for Materials and Processes [CERI MP - IMT Nord Europe]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Petit, Laurent [Auteur]
Legrix, A. [Auteur]
Tran, N.C. [Auteur]
Masson, B. [Auteur]

Titre de la revue :

Construction and Building Materials

Pagination :

117618

Éditeur :

Elsevier

Date de publication :

2020-03

ISSN :

0950-0618

Mot(s)-clé(s) en anglais :

Bioprecipitation
Calcium carbonate
Bacteria
Concrete
Nuclear reactors
Micro-cracks
Durability
Pressurization

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Matériaux
Sciences du Vivant [q-bio]/Biotechnologies

Résumé en anglais : [en]

Bioprecipitation of calcium carbonate – biofilm composite on the concrete surface by spraying a bacterial suspension can reduce the permeability of concrete especially in the presence of micro-cracks. This process was ...
Lire la suite >Bioprecipitation of calcium carbonate – biofilm composite on the concrete surface by spraying a bacterial suspension can reduce the permeability of concrete especially in the presence of micro-cracks. This process was applied to a replica at 1/3 scale of a nuclear reactor enclosure that was then subjected to pressurization at 500 kPa. The effectiveness of bioprecipitation treatment was demonstrated in areas where deformations of the concrete during pressurization remained minimal. Additional laboratory tests confirmed that the calcium carbonate – biofilm composite bioprecipitated in a micro-crack can withstand an air flow with a pressure of 450 kPa.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515

Source :

Harvested from HAL

Date de dépôt :

2025-02-26T10:19:27Z