Study of concrete changes characteristics after biocorrosion processes affected by wastewater

• Autorzy: Ondrejka-Harbuláková, V. , Eštoková, A. , Števulová, N. , Foraiová, K.
• Języki publikacji: EN

Abstrakty

EN

Numerous studies have addressed the problem of chloride ingress in concrete structures. However, in addition to sulphate penetration, biological processes can accelerate the deterioration process by modifying severely the structural durability and reliability. The strength parameters and weight changes were evaluated as an average value from 3 concrete samples. Compressive strength value of reference samples were measured at the concrete cubes (150 mm x 150 mm x 150 mm) after 28 days of hardening; other samples were tested after taken out the sewerage (same cubes 150 mm x 150 mm x 150 mm) and were evaluated according to the STN EN 206. X-ray fluorescence method was used for investigation of the chemical composition of the concrete samples before and after the experiment. Compressive strength increase of concrete samples was observed for all samples exposed to the wastewater from combined gravitational sewage system comparing to the initial compressive strength value of reference set. The percentage content (after 6 months) of Fe, Al and Mg has been a little increased compared to the reference sample and the similar trend was visible (after 18 months) only for Aluminium. In case of the other chemical components, the values remained almost the same or only very small changes were determined.

Słowa kluczowe

PL

beton; kanalizacja; ścieki; korozja biologiczna; wytrzymałość na ściskanie; skład chemiczny

EN

concrete; sewage system; wastewater; biological corrosion; compressive strength; chemical composition

• Czasopismo: Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska
• Rocznik: 2012
• Tom: z. 59, nr 2/I
• Strony: 13--21
• Opis fizyczny: Bibliogr. 9 poz., il., tab.

Twórcy

autor

Ondrejka-Harbuláková, V.

• Technical University, Civil Engineering Faculty, Institute Environmental Engineering, Kosice

autor

Eštoková, A.

• Technical University, Civil Engineering Faculty, Institute Environmental Engineering, Kosice

autor

Števulová, N.

• Technical University, Civil Engineering Faculty, Institute Environmental Engineering, Kosice

autor

Foraiová, K.

• Slovak Water Management Enterprise, s.c., Kosice

Bibliografia

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• [2] Cho K., Mori T.: A newly isolated fungus participates in the corrosion of concrete sewer pipes, Water Sci Technol., vol. 35, pp. 263-271, 1995.
• [3] Idriss A.F., Negi S.C., Jofriet J.C., Hayward G.L.: Corrosion of steel reinforcement in mortar specimens exposed to hydrogen sulfide, Part 1: Impressed voltage and electrochemical potential tests. J Agr Eng Res., vol. 79(3): pp. 223-230, 2001.
• [4] Vincke E., Verstichel S, Monteny J, Verstraete W.: A new test procedure for biogenic sulfuric acid corrosion of concrete. Biodegradation; vol. 10(6): pp.421-428, 1999.
• [5] Attiogbe E.K., Rizkalla S.H.: Response of concrete to sulphuric acid attack. ACI Mater J., vol., 84(6), pp. 481-488, 1988.
• [6] Skalny J, Marchand J, Odler I.: Sulfate attack on concrete. London, Spon Press, 2002.
• [7] Davis J.L., Nica D., Shields K., Roberts D.J.: Analysis of concrete from corroded sewer pipe. Int. Biodeter. Biodegr.; vol. 42(1), pp.75-84, 1998.
• [8] Ondrejka Harbulakova V., Luptakova A., Stevulova N., Repka M.: Comparative study of acid corrosion and leaching proceeded in model conditions., In: Current Issues of Civil and Environmental Engineering in Košice, Lviv and Rzeszów : 13th International Scientific Conference, Herľany-Košice: TU, pp. 1-7, 2011.
• [9] Estokova A., Ondrejka Harbuľáková V., Luptakova A., Prascakova M., Stevulová N.: The study of Resistance of Cement Composites against Microbial Attack In: Journal of Civil Engineering and Architecture. vol. 5, no. 6, pp. 555-561, 2011.