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Cementitious materials in biogas systems: Biodeterioration mechanisms and kinetics in CEM I and CAC based materials

Voegel, Célestine and Giroudon, Marie and Bertron, Alexandra and Patapy, Cédric and Matthieu, Peyre Lavigne and Verdier, Thomas and Erable, Benjamin Cementitious materials in biogas systems: Biodeterioration mechanisms and kinetics in CEM I and CAC based materials. (2019) Cement and Concrete Research, 124. 105815. ISSN 0008-8846

(Document in English)

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Official URL: https://doi.org/10.1016/j.cemconres.2019.105815


In anaerobic digestion plants, biological activities transform biowaste into a renewable energy: the biogas. This process produces aggressive and complex media in direct contact with the structure. Few studies have focused on the deterioration of concrete in such environments. In order to support the sustainable development of biogas production growing sector, this study intends to provide thorough information on the biowaste chemical composition and on materials biodeterioration mechanisms occurring in biogas plants. Cementitious materials with various surface compositions (pastes of CEM I, CAC and CEM I treated with oxalic acid) were immersed in the liquid phase of laboratory bioreactors reproducing anaerobic digestion conditions. Altered depths measurements in time highlighted the better resistance of the CAC material. The microbial biofilm coverage on the material's surface was delayed by the surface pretreatment with oxalic acid and was less dense for the CAC paste. Chemical and mineralogical analyses mainly showed leaching and carbonation phenomena.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Agence Nationale de la Recherche- ANR - PRES Université de Toulouse - Région Midi-Pyrénées
Deposited On:18 Sep 2019 09:53

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