Travailleur, Lucy Gueguen-Minerbe, Marielle Nour, Issam Marceau, Sandrine Keita, Emmanuel Chaussadent, Thierry
Published in
Matériaux & Techniques
Polymer-modified mortars are cementitious materials that integrate polymers from 5 to 20 wt.%. Those materials are widely used for protecting and/or repairing concrete surfaces among which building facades, civil engineering structures, or sewage networks. In this context, polymer-modified mortars are applied into thin layers of about 1–3 cm. Howev...
Li, Yonghui; Wu, Ruobin; Xie, Huarong; Zhao, Guoli; Dang, Xinyuan; 149958; Hokoi, Shuichi;
status: published
GRANDCLERC, Anaïs Gueguen Minerbe, Marielle NOUR, Issam DOMINIQUE, Nadia Dangla, Patrick Chaussadent, Thierry
Différentes dégradations des matériaux cimentaires sont observées dans les réseaux d'assainissement. Certaines de ces dégradations sont, par exemple, provoquées par la présence de l'hydrogène sulfuré dans la partie aérienne des canalisations. En effet, des micro-organismes sulfooxydants, constituant en partie le biofilm déposé sur la paroi cimentai...
GRANDCLERC, Anaïs Gueguen Minerbe, Marielle NOUR, Issam Dangla, Patrick Chaussadent, Thierry
Mortars based on different compositions (cast with calcium aluminate cement (CAC), ordinary Portland cement (CEM I), blended Portland cement (CEM III, CEM IV, CEM V) and super sulphated cement (SSC)) were exposed to gaseous H2S. The most soluble phases from cement lead to the presence of ions in a water layer formed on the mortar surface and these ...
Herisson, Jean Guéguen-Minerbe, Marielle van Hullebusch, Eric D. Chaussadent, Thierry
Published in
Materials and Structures
The present study deals with the exposure of four different mortar formulations in the headspace of two distinct sewer networks prone to biodeterioration phenomenon due to the presence of hydrogen sulphide. Cylindrical specimens composed of two cements, ordinary Portland cement (OPC) and calcium aluminate cement (CAC), with or without a substitutio...
Grandclerc, Anaïs Gueguen-Minerbe, Marielle Nour, Issam Dangla, Patrick Chaussadent, Thierry
Published in
Matériaux & Techniques
Concrete deterioration is extensively observed due to hydrogen sulphide emission in sewerage networks. The presence of this gas leads to the development of sulphur-oxidizing bacteria which produce sulphuric acid. Local deterioration of concrete sewer pipes, based on dissolution-precipitation mechanisms and the formation of ettringite and gypsum, de...
Manso, Sandra Calvo-Torras, María Ángeles De Belie, Nele Segura, Ignacio Aguado, Antonio
Published in
The Science of the total environment
Incorporation of living organisms, such as photosynthetic organisms, on the structure envelope has become a priority in the area of architecture and construction due to aesthetical, economic and ecological advantages. Important research efforts are made to achieve further improvements, such as for the development of cementitious materials with an e...
Herisson, Jean Gueguen Minerbe, Marielle Van Hullebusch, Eric D. Saucier, François Bourgier, Véronique Chaussadent, Thierry
Les recommandations actuelles de la norme FD P18-011 préconisent de protéger le béton lorsque les conditions d'exposition chimique excèdent certains seuils. Dans le cas des ouvrages d'assainissement soumis à la biocorrosion initiée par la présence d'H2S, cette norme préconise l'application de reÐtement pour protéger le béton lorsque les seuils maxi...
Manso, Sandra De Muynck, Willem Segura, Ignacio Aguado, Antonio Steppe, Kathy Boon, Nico De Belie, Nele
Published in
Science of the Total Environment
•Magnesium phosphate cement suitability to stimulate colonisation is evaluated.•Quantification of algal biomass by PAM-fluorometry was carried out.•Fouling intensity parameter is suitable until complete coverage of specimens.•Magnesium phosphate cement based mortars showed higher bioreceptivity.
Rosado, T Reis, A Mirao, J Candeias, A Vandenabeele, Peter Caldeira, AT