Publication detail

PROTECTION OF THE CAST BASALT SEWERS FOR ENHANCING RESISTANCE TO BIOCORROSION

HODUL, J. ŽLEBEK, T. JAKUBÍK, A. DROCHYTKA, R.

Original Title

PROTECTION OF THE CAST BASALT SEWERS FOR ENHANCING RESISTANCE TO BIOCORROSION

English Title

PROTECTION OF THE CAST BASALT SEWERS FOR ENHANCING RESISTANCE TO BIOCORROSION

Type

conference paper

Language

en

Original Abstract

The concrete and masonry walls of sewers, in addition to the bases, are not only exposed to sulphates from wastewater but also to highly aggressive sulfuric acid, which is a consequence of bacterial biogenic corrosion. The most effective solution for preventing sewer defects involves the use of highly durable building materials (e.g. cast basalt tiles and profiles) and consistent details, or, joints solving. The cast basalt elements show both high abrasion resistance and high resistance to chemical stress. However, a problem with chemical resistance can occur when dealing with details (e.g. solving brick grouting). This paper deals with the rehabilitation of sewers, which can be severely degraded largely due to chemical stress, or, biocorrosion. The problem of significant biocorrosion can be caused by restricting sewerage ventilation to the surface, which results in increased concentrations of moisture, hazardous gases and aerosol-generated gas. Cast basalt tiles are very smooth, meaning the aggressive precipitated liquid transfers into the joints, which then become highly chemically stressed. Cement-based joint grouts exhibit higher water absorption, meaning severe deterioration caused by the biocorrosion occurs in the joints. A strongly acidic environment (up to pH 1) can be measured on the surface of the air chamber sewer facing. For this reason, it is necessary to use highly resistant jointing grout materials. Here, the presented solution is built on epoxy resin-based composites that are resistant to chemical loads and can also be applied to damp surfaces, and which, after curing, will exhibit high cleanability and non-absorbability.

English abstract

The concrete and masonry walls of sewers, in addition to the bases, are not only exposed to sulphates from wastewater but also to highly aggressive sulfuric acid, which is a consequence of bacterial biogenic corrosion. The most effective solution for preventing sewer defects involves the use of highly durable building materials (e.g. cast basalt tiles and profiles) and consistent details, or, joints solving. The cast basalt elements show both high abrasion resistance and high resistance to chemical stress. However, a problem with chemical resistance can occur when dealing with details (e.g. solving brick grouting). This paper deals with the rehabilitation of sewers, which can be severely degraded largely due to chemical stress, or, biocorrosion. The problem of significant biocorrosion can be caused by restricting sewerage ventilation to the surface, which results in increased concentrations of moisture, hazardous gases and aerosol-generated gas. Cast basalt tiles are very smooth, meaning the aggressive precipitated liquid transfers into the joints, which then become highly chemically stressed. Cement-based joint grouts exhibit higher water absorption, meaning severe deterioration caused by the biocorrosion occurs in the joints. A strongly acidic environment (up to pH 1) can be measured on the surface of the air chamber sewer facing. For this reason, it is necessary to use highly resistant jointing grout materials. Here, the presented solution is built on epoxy resin-based composites that are resistant to chemical loads and can also be applied to damp surfaces, and which, after curing, will exhibit high cleanability and non-absorbability.

Keywords

Sewers, Polymer Cement Mass, Cast Basalt, Biocorrosion, Sulphates, Epoxy Resin

Released

16.09.2019

Publisher

The University of British Columbia

Location

Whistler, Kanada

ISBN

978-0-88865-341-3

Book

PROCEEDINGS OF THE SEVENTH INTERNATIONAL COLLOQUIUM ON PERFORMANCE, PROTECTION AND STRENGTHENING OF STRUCTURES UNDER EXTREME LOADING AND EVENTS

Edition

N. Banthia, S. Soleimani-Dashtaki, V. Kodur, B. Wu, K. Fujikake, and N. Suresh

Pages from

1

Pages to

12

Pages count

12

Documents

BibTex


@inproceedings{BUT158881,
  author="Jakub {Hodul} and Tomáš {Žlebek} and Aleš {Jakubík} and Rostislav {Drochytka}",
  title="PROTECTION OF THE CAST BASALT SEWERS FOR ENHANCING RESISTANCE TO BIOCORROSION",
  annote="The concrete and masonry walls of sewers, in addition to the bases, are not only exposed to sulphates from wastewater but also to highly aggressive sulfuric acid, which is a consequence of bacterial biogenic corrosion. The most effective solution for preventing sewer defects involves the use of highly durable building materials (e.g. cast basalt tiles and profiles) and consistent details, or, joints solving. The cast basalt elements show both high abrasion resistance and high resistance to chemical stress. However, a problem with chemical resistance can occur when dealing with details (e.g. solving brick grouting). This paper deals with the rehabilitation of sewers, which can be severely degraded largely due to chemical stress, or, biocorrosion. The problem of significant biocorrosion can be caused by restricting sewerage ventilation to the surface, which results in increased concentrations of moisture, hazardous gases and aerosol-generated gas. Cast basalt tiles are very smooth, meaning the aggressive precipitated liquid transfers into the joints, which then become highly chemically stressed. Cement-based joint grouts exhibit higher water absorption, meaning severe deterioration caused by the biocorrosion occurs in the joints. A strongly acidic environment (up to pH 1) can be measured on the surface of the air chamber sewer facing. For this reason, it is necessary to use highly resistant jointing grout materials. Here, the presented solution is built on epoxy resin-based composites that are resistant to chemical loads and can also be applied to damp surfaces, and which, after curing, will exhibit high cleanability and non-absorbability.",
  address="The University of British Columbia",
  booktitle="PROCEEDINGS OF THE SEVENTH INTERNATIONAL COLLOQUIUM ON PERFORMANCE, PROTECTION AND STRENGTHENING OF STRUCTURES UNDER EXTREME LOADING AND EVENTS",
  chapter="158881",
  edition="N. Banthia, S. Soleimani-Dashtaki, V. Kodur, B. Wu, K. Fujikake, and N. Suresh",
  howpublished="electronic, physical medium",
  institution="The University of British Columbia",
  year="2019",
  month="september",
  pages="1--12",
  publisher="The University of British Columbia",
  type="conference paper"
}