Title :

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

Author(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]

Journal title :

Construction and Building Materials

Pages :

117618

Publisher :

Elsevier

Publication date :

2020-03

ISSN :

0950-0618

English keyword(s) :

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

HAL domain(s) :

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

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

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

Source :

Harvested from HAL

Submission date :

2025-02-26T10:19:27Z