Acid corrosion of plain and reinforced concrete sewage systems

Ernest O. Nnadi, Juan Lizarazo-Marriaga

Research output: Contribution to journalArticle

9 Citations (Scopus)
1 Downloads (Pure)

Abstract

The infrastructure of concrete sewage systems is affected notably by biogenic sulfuric acid attack, which causes rapid deterioration of each of its components. To provide a better understanding of this mechanism of damage, this paper reports on research carried out to study the response of the cementitious concrete matrix and the reinforcement steel under the attack of sulfuric acid. Concrete industrial pipes were cast using ordinary portland cement and pulverized fly ash, and specimens obtained from the mixes were left for several cycles in a solution of sulfuric acid at different pH. Experiments were carried out to assess the loss of weight and the electrical corrosion potential. Results showed that sulfuric acid attack can be considered a surface phenomenon, in which the acid attack destroys the cover of concrete before it reaches the reinforcement.

Original languageEnglish
Pages (from-to)1353-1356
Number of pages4
JournalJournal of Materials in Civil Engineering
Volume25
Issue number9
Early online date25 Aug 2012
DOIs
Publication statusPublished - 9 Sep 2013

Fingerprint

Sewage
Sulfuric acid
Reinforced concrete
Concretes
Corrosion
Acids
Reinforcement
Coal Ash
Surface phenomena
Steel
Portland cement
Fly ash
Deterioration
Pipe
sulfuric acid
Experiments

Bibliographical note

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

  • Biogenic sulfuric acid attack (BSA)
  • Concrete pipes
  • Concrete corrosion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Acid corrosion of plain and reinforced concrete sewage systems. / Nnadi, Ernest O.; Lizarazo-Marriaga, Juan.

In: Journal of Materials in Civil Engineering, Vol. 25, No. 9, 09.09.2013, p. 1353-1356.

Research output: Contribution to journalArticle

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