Ability in biofouling by Klebsormidium flaccidum of mortars: Influence of the intrinsic characteristics

Alexandre Govin (1, 2, 3) , Thu Hien Tran (4) , René Guyonnet (1, 2, 3) , Philippe Grosseau (1, 2, 3) , Christine Lors (5, 6) , Denis Damidot (5, 6) , Olivier Devès (7, 8) , Bertrand Ruot (8, 7)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 PROPICE-ENSMSE - Département PROcédés Poudres, Interfaces, Cristallisation et Ecoulements
3 LGF-ENSMSE - Laboratoire Georges Friedel
4 DCE - Department of Civil Engineering
5 Université Lille Nord de France (COMUE)
6 LGCgE - Laboratoire Génie Civil et Géo-Environnement [Béthune]
7 Université Paris Est
8 CSTB - Centre Scientifique et Technique du Bâtiment

The aim of this study was to highlight the influence of the intrinsic properties of mortars (roughness, porosity, and surface pH) on their susceptibility to biodegradation by phototrophic microorganisms. An accelerated fouling test was performed using the green algae Klebsormidium flaccidum. The biofouling was evaluated by means of image analysis. The colonization of samples was not influenced by the porosity because of the specific conditions of testing. However, the increase in roughness and the decreases in surface pH by the means of carbonation, promote algal development significantly. Thus the latency time is shortened and the rate of colonization increases.

Mots clés: Biofouling; Algae; Mortar; intrinsic characteristics

Domaines: Génie des procédés

Alexandre Govin, Thu Hien Tran, René Guyonnet, Philippe Grosseau, Christine Lors, et al.. Ability in biofouling by Klebsormidium flaccidum of mortars: Influence of the intrinsic characteristics. First International Conference on Concrete Sustainability (ICCS), May 2013, Tokyo, Japan. S3-3-6 pp. 914-919. ⟨hal-00805695⟩