Bio-corrosion behavior of zeolite and silica fume composites in sulphate environment

Author(s): Michaela Smolakova, Adriana Estokova and Alena Luptakova
Paper category: Proceedings
Book title: Proceedings of the Final Conference of RILEM 253-MCI Microorganisms-Cementitious Materials Interactions Volume I
Editor(s): Alexandra Bertron and Henk Jonkers
ISBN: 978-2-35158-207-7 (Set)
ISBN: 978-2-35158-209-1 (Volume1)
e-ISBN: 978-2-35158-206-0
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 193-202
Total Pages: 288
Language : English

Abstract: Mitigating the impact of microbiologically induced corrosion of concrete (MICC) is nowadays highly required. This work is focused on evaluation of microbiologically induced corrosion of concrete with pozzolanic materials such as zeolite and silica fume. Experiments were conducted for 60 days and the MICC was simulated by sulphur–oxidizing bacteria Acidithiobacillus thiooxidans. In the experiment, changes in the pH and leaching rates of the selected elements (Ca, Si and Al) along with surface changes were observed. Depths of deterioration of concrete samples were calculated based on the dissolved Ca amounts. It was anticipated that composites with zeolite and silica fume will be more resistant to microbiologically induced corrosion than conventional concrete. However, this assumption was not confirmed at the end of the experiments.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00

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