Study of different types of corrosion processes simulated in model conditions

• Autorzy: Ondrejka Harbuláková V. , Števulova N. , Repka M. , Luptáková A.
• Języki publikacji: EN

Abstrakty

EN

Existing evidence has shown that in many concrete structures exposed to aggressive aqueous environments corrosion problems are present. In places like marine environments, sewers, agricultural structures, underground and hydraulic structures, chemical plants, industrial structures, liquid-containing structures these problems are especially very well visible. Degradation mechanisms such as alkali silica reaction, chloride penetration, carbonation, acid corrosion, leaching etc. have necessitated the renewal of complete structures. Leaching and acid corrosion mechanisms were chosen for detailed study and partial results are present in this paper. Concrete samples without coal fly ash addition and as well as sample with addition of 5% resp. 10 % of coal fly ash were used for experiment. Paper is aimed on study and evaluation of chemical corrosion and leaching due to sulphuric acid/distilled water influence on concrete samples. After the experiment of exposure of concrete samples to these different environments the concrete surface changes and the pH values changes of leachate were measured and evaluated.

Słowa kluczowe

EN

corrosion; corrosion type; concrete structure; aggressive environment; aqueous environment

PL

korozja; rodzaj korozji; konstrukcja betonowa; środowisko agresywne; środowisko wodne

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska
• Rocznik: 2012
• Tom: z. 59, nr 1/I
• Strony: 141--148
• Opis fizyczny: Bibliogr. 10 poz., il.

Twórcy

autor

Ondrejka Harbuláková V.

autor

Števulova N.

autor

Repka M.

autor

Luptáková A.

• Technical University of Košice

Bibliografia

• [1] Winter N.: Understanding cement, WHD Microanalysis Consultant, United Kingdom 2009.
• [2] Bajza A., Rousekova I.: Concrete technology, JAGA, Bratislava 2006.
• [3] Zajicek M.: Concrete admixtures – categories, properties and utilization, Proc. of the Concrete Production, Banska Bystrica 2008.
• [4] Roberts D.J., Nica D., Zu O.G., Davis J.L.: Quantifying microbially induced deterioration of concrete: initial studies, International Biodeterioration & Biodegradation, vol. 49, 2002, pp. 227-234.
• [5] Wolf G.: Optical and spectroscopic methods for biofilm examination and monitoring, J. Environmental Science and Technology, vol. 1, 2002.
• [6] Moskvin V.M.: Corrosion of concrete and reinforced concrete. Methods of protection, Moscow 1980.
• [7] Estokova A., Ondrejka Harbulakova V., Luptakova A., Prascakova M., Stevulova N.: Sulphur oxidizing bacteria as the causative factor of biocorrosion of concrete, Chemical Engineering Transactions: Selected Papers of ICheaP-10, vol. 24, 2011, pp. 1-6.
• [8] Estokova A., Ondrejka Harbulakova V., Luptakova A., Prascakova M., Stevulova N.: The investigation of resistibility of cement composites against biological aktivity, 37th IAHS World Congress on Housing Science: Design, technology, refurbishment and management of buildings, 26-29 October 2010, Santander: University of Cantabria, Spain 2010, pp. 1-8.
• [9] Ondrejka Harbulakova V., Estokova A., Stevulova N.: The investigation of concrete’ biodeterioration in sewer pipes, case study, Pollack Periodica, vol. 5, no 1, 2010, pp. 87-95.
• [10] Ondrejka Harbulakova V., Luptakova A., Estokova A., Stevulova N.: Changes of porosity and roughness of concrete surfaces due to microbial corrosion, JCCE – Journal of Chemistry and Chemical Engineering, vol. 5, no 3, 2011, pp. 241-245.