<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The aim of this study is to investigate the durability of cement-based materials subjected to the effects of sulphuric acid in terms of surface deterioration. Damaged concrete surfaces and the samples’ mass changes were studied during 270-day simulation of both chemical and biological attacks. Chemical corrosion was simulated by sulphuric acid with pH of 3.0 and 4.0, respectively, while biological corrosion was simulated by activity of bacteria Acidithiobacillus thiooxidans. XRD and SEM analyses confirmed a massive sulphate precipitate formation on the concrete surface due to chemical and biological sulphate corrosion.</p></abstract>

The aim of this study is to investigate the durability of cement-based materials subjected to the effects of sulphuric acid in terms of surface deterioration. Damaged concrete surfaces and the samples’ mass changes were studied during 270-day simulation of both chemical and biological attacks. Chemical corrosion was simulated by sulphuric acid with pH of 3.0 and 4.0, respectively, while biological corrosion was simulated by activity of bacteria Acidithiobacillus thiooxidans. XRD and SEM analyses confirmed a massive sulphate precipitate formation on the concrete surface due to chemical and biological sulphate corrosion.

Investigation of the Precipitates on the Concrete Surface due to Sulphate Exposure

Civil Engineering Faculty, Institute of Environmental Engineering

Selected Scientific Papers - Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The aim of this study is to investigate the durability of cement-based materials subjected to the effects of sulphuric acid in terms of surface deterioration....

Investigation of the Precipitates on the Concrete Surface due to Sulphate Exposure

Publié en ligne: 20 janv. 2017

Pages: 31 - 38

DOI: https://doi.org/10.1515/sspjce-2016-0016

Mots clés
concrete, precipitates, deterioration

© 2017 Martina Kovalčíková et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Investigation of the Precipitates on the Concrete Surface due to Sulphate Exposure

Publié en ligne: 20 janv. 2017

Pages: 31 - 38

DOI: https://doi.org/10.1515/sspjce-2016-0016

Mots clésconcrete, precipitates, deterioration

© 2017 Martina Kovalčíková et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
concrete, precipitates, deterioration