2013
DOI: 10.1051/mattech/2013055
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Bio-réparation des matériaux cimentaires : les bactéries au service des mortiers fissurés

Abstract: Résumé -L'objectif de notreétude est de développer un système de réparation pour les matériaux cimentaires qui présente de meilleurs propriétés par rapport aux produits actuellement disponibles, en termes de performanceà long terme et de respect de l'environnement. Ainsi, un système de réparation contenant des bactéries aété développé. Le biominéral formé via l'activité bactérienne conduità la cicatrisation des fissures ainsi qu'à la diminution de la porosité. Le but du travail présenté ici est d'évaluer les p… Show more

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“…However, problems such as environmental nitrogen loading due to the production of ammonia during the hydrolysis of urea or negative effect to the material itself due to chemical reactions between concrete material and ammonium salt have been reported when using ureolytic bacteria for MICP [4]. Another possible pathway is the metabolic conversion of organic salts simply through bacterial respiration which results into CO 2 production [5].…”
Section: The Conceptmentioning
confidence: 99%
“…However, problems such as environmental nitrogen loading due to the production of ammonia during the hydrolysis of urea or negative effect to the material itself due to chemical reactions between concrete material and ammonium salt have been reported when using ureolytic bacteria for MICP [4]. Another possible pathway is the metabolic conversion of organic salts simply through bacterial respiration which results into CO 2 production [5].…”
Section: The Conceptmentioning
confidence: 99%