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  4. Comparative evaluation of laboratory methods for performance assessment of cementitious materials in wastewater networks
 
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2025
Journal Article
Title

Comparative evaluation of laboratory methods for performance assessment of cementitious materials in wastewater networks

Title Supplement
Biological and chemical tests versus field exposure
Abstract
The biodeterioration of concrete elements in sewer systems and their repair is of significant economic and societal concern. However, the available test methods to assess the performance of cementitious materials under the relevant conditions are insufficiently validated. In the present study, two biological test methods and a standardised chemical test were applied to two sewer repair mortars and a reference mortar, and the performances of these materials were compared in a severely deteriorating sewer environment. In both biological tests, the induction period was considerably shorter than that of the field, and time-resolved recording of durability indicators enabled to determine deterioration rates in the steady-state regime, which compared reasonably well with each other and with the behaviour in the sewer environment. The chemical test does not allow to obtain a deterioration rate, and the observed relative performance differences of the mortars deviated from the results of the biological tests.
Author(s)
Bertron, Alexandra  
Université de Toulouse
Grengg, Cyrill
Graz University of Technology  
Lavigne, Matthieu Peyre
Université de Toulouse
Wack, Holger  
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Gluth, Gregor J.G.
Bundesanstalt für Materialforschung und -prüfung -BAM-, Berlin  
Aboulela, Amr  
Université de Toulouse
Sonois, Vanessa
Université de Toulouse
Gehrke, Tilman
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Mittermayr, Florian  
Graz University of Technology
Journal
Cement and concrete research  
Open Access
DOI
10.1016/j.cemconres.2024.107741
Additional full text version
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Language
English
Fraunhofer-Institut für Umwelt-, Sicherheits- und Energietechnik UMSICHT  
Keyword(s)
  • Microbially-induced concrete deterioration

  • Biodeterioration

  • Sulfuric acid attack

  • Test methods

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