Degradação do concreto de uma Estação de Tratamento de Esgoto (ETE) por ácido sulfúrico biogênico

  • J. Hoppe Filho 1Curso de Engenharia Civil, Universidade do Oeste da Bahia (UFOB), Brasil
  • B. Rheinheimer Departamento de Construção Civil, Universidade Federal do Paraná (UFPR)
  • S. S. Khoe Departamento de Construção Civil, Universidade Federal do Paraná (UFPR)
  • L. V. Artigas Departamento de Construção Civil, Universidade Federal do Paraná (UFPR), Brasil
  • A. F. Sabbag Companhia de Saneamento do Paraná (Sanepar), Brasil
  • M. H. F. Medeiros Departamento de Construção Civil, Universidade Federal do Paraná (UFPR)
DOI: https://doi.org/10.21041/ra.v4i2.63
Keywords: acid attack, sulphate attack, durability, reinforced concrete

Abstract

At sewage treatment plants, acid attack (and sulfate attack as a secondary consequence) degrades the cement paste, forming ettringite and/or gypsum, causing expansion, cracking and brittleness. The degradation mechanism of concrete in sewage treatment plants also affects the calcium silicate hydrate (C-S-H), reducing the mechanical capacity and service life. The aim of this paper is to present results of the inspection of a sewage treatment plant, which has been operating for about 15 years, where there is noticeable degradation of concrete by a combined acid and sulfate attack. The analysis includes results of a sample collected in the region immediately above the effluent, which had the highest concentration of bacteria and a specimen extracted from the treatment tank slab. Compressive strength of the specimen is consistent with the project, although scanning electron microscopy images and X-ray diffraction identified the formation of gypsum and ettringite within the concrete.

Keywords: acid attack; sulphate attack; durability; reinforced concrete.

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References

De Muynck, W., De Belie, N., Verstraete, W. (2009), “Effectiveness of admixtures, surface treatments and antimicrobial compounds against biogenic sulfuric acid corrosion of concrete”, Cement and Concrete Composites, V. 31, No. 3, pp. 163-170. DOI: https://doi.org/10.1016/j.cemconcomp.2008.12.004

Eštokova, A., Harbul'áková, V.O., Luptáková, A., Stevulová, N. (2012) “Study of deterioration of concrete influenced by biogenic sulphate attack”, Procedia Engineering, V. 42, pp. 1731-1738. DOI: https://doi.org/10.1016/j.proeng.2012.07.566

Gutiérrez-Padilla, M.G.D., Bielefeldt, A., Ovtchinnikov, S., Hernandez, M., Silverstein, J. (2010) “Biogenic sulfuric acid attack on different types of commercially produced concrete sewer pipes”, Cement and Concrete Research, V. 40, No. 2, pp. 293-301. DOI: https://doi.org/10.1016/j.cemconres.2009.10.002

Islander, R.L., Devinny, J.S., Mansfeld, F., Postyn, A., Shih, H. (1991), “Microbial ecology of crown corrosion in sewers”, Journal of Environmental Engineering, V. 117, No. 6, pp. 751-770. DOI: https://doi.org/10.1061/(ASCE)0733-9372(1991)117:6(751)

Pinto, J., Takagi, E.M. (2007) “Sistemas de impermeabilização e proteção para obras de saneamento”, Concreto & Construções, Ano XXXIV, No. 47, pp. 73-79.

Monteny, J., Vincke, E., Beeldens, A., De Belie, N., Taerwe, L., Van Gemert, D., Verstraete, W. (2000), “Chemical, microbiological, and in situ test methods for biogenic sulfuric acid corrosion of concrete”, Cement and Concrete Research, V. 30, No. 4, pp. 623-634. DOI: https://doi.org/10.1016/S0008-8846(00)00219-2

Mori, T., Nonaka, T., Tazaki, K., Koga, M., Hikosaka, Y., Noda, S. (1992) “Interactions of nutrients, moisture and pH on microbial corrosion of concrete sewer pipes”, Water Research, V. 26, No. 1, pp.29-37. DOI: https://doi.org/10.1016/0043-1354(92)90107-F

NBR 7680 (2007), Concreto – Extração, preparo e ensaio de testemunhos de concreto. Associação Brasileira de Normas Técnicas – ABNT. Rio de Janeiro, Brasil.

NBR 5739 (2007), Concreto – Ensaio de compressão de corpos-de-prova cilíndricos. Associação Brasileira de Normas Técnicas – ABNT. Rio de Janeiro, Brasil.

NBR 6118 (1980), Projeto e execução de obras de concreto armado. Associação Brasileira de Normas Técnicas – ABNT. Rio de Janeiro, Brasil.

Published
2014-05-30
How to Cite
Hoppe Filho, J., Rheinheimer, B., Khoe, S. S., Artigas, L. V., Sabbag, A. F., & Medeiros, M. H. F. (2014). Degradação do concreto de uma Estação de Tratamento de Esgoto (ETE) por ácido sulfúrico biogênico. Revista ALCONPAT, 4(2), 84 - 96. https://doi.org/10.21041/ra.v4i2.63
Issue
Vol. 4 No. 2 (2014)
Section
Study Case

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