Mathematical evaluation of deleterious processes of fly ash-based concrete in pipelines

• Autorzy: Ondrejka Harbuláková V. , Eštoková A. , Luptáková A.

Identyfikatory

DOI

10.7862/rb.2016.169

• Języki publikacji: EN

Abstrakty

EN

Concrete performs well when exposed to various atmospheric conditions, water, soil, and many other chemical exposures. However, some chemical environments or even water can deteriorate high-quality concrete. Paper considers the usefulness of current fly ash concrete technology and prevention techniques, and advances a new approach for making concrete resist the deleterious effects of corrosion. This paper is focused on study of the durability of concrete materials based on two types of fly ashes which substitute 5 wt. % of cement in concrete mixture. Mathematical evaluation using correlation analysis was applied for assessment of deterioration of the concrete samples with fly ash of different origins. Experiment was done by measurements of elementary leached-out ions concentration (Ca, Si, Fe, Al, Cu and Mn) and subsequently correlation analysis between the ions each other (in the same type of fly ash or between different types of fly ash respectively) and also correlation between ions concentrations and pH values of leachate. The correlation coefficient showed different mechanism of calcium and silicon ions leaching when comparing the concrete samples with fly ash from brown coal burning and samples with fly ash from black coal burning.

Słowa kluczowe

EN

corrosion; correlation analysis; concrete deterioration

• Wydawca: Oficyna Wydawnicza Politechniki Rzeszowskiej
• Czasopismo: Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture
• Rocznik: 2016
• Tom: z. 63, nr 2/II
• Strony: 343--350
• Opis fizyczny: Bibliogr. 9 poz., tab.

Twórcy

autor

Ondrejka Harbuláková V.

• Technical University of Košice, Civil Engineering Faculty, Institute of Environmental Engineering, Vysokoskolska 4, 042 00 Košice, SLOVAKIA, + 421 [phone]

autor

Eštoková A.

• Technical University of Košice, Civil Engineering Faculty, Institute of Material Engineering, Vysokoskolska 4, 042 00 Košice, SLOVAKIA, + 421 [phone]

autor

Luptáková A.

• Slovak Academy of Science, Institute of Geotechnics, Watsonova 45, 043 53 Košice, SLOVAKIA, + 421 [phone]

Bibliografia

• [1] Ikeda M., et al.: Influence of type of cement on Ca leaching from concrete using experimental acceleration method, 29th conference on our world in concrete and structures, 25-26 August, Singapore 2004.
• [2] Bradshaw A.S., daSilva G., McCue M.T., Kim J., Nadukuru S.S., Lynch J., Michalowski R.L., Pour-Ghaz M., Weiss, J., Green R.A.: Damage detection and health Monitoring of buried concrete pipelines, Prediction and Imulation Methods for 350 V. Ondrejka Harbuľáková, A. Eštoková, A. Luptáková Geohazard Mitigation – Oka, Murakami & Kimoto (eds)., Taylor & Francis Group, London 2009.
• [3] OD/Coating HRDS Manual Appendex A: Basics on corrosion in wastewater collection and treatmnet system: The Corroding Environments and Materials, web page: http://www.hrsd.com/pdf/Coatings%20Manual/2011/APPENDIX%20A.pdf.
• [4] Available on web page: http://www.encyclopedia.com/topic/coal.aspx.
• [5] Ghassemi A.: Handbook of Pollution Control and Waste Minimization, CRC Press, 2001, pp. 434.
• [6] Kreyszig E.: Advanced Engineering Mathematics, John Wiley and sons, 10th edition, 2011.
• [7] Ondrejka Harbulakova V., Estokova A., Purcz P., Luptakova A.: Correlation analysis as a method for concrete deterioration investigation, ICOCEE 2015, Nevsehir: Nevsehir Haci Bektas Veli University, 2015, pp. 943-949.
• [8] Ondrejka Harbulakova V., Estokova A., Purcz P., Luptakova A.: Investigation of correlation of concrete corrosion parameters, SGEM 2015, Sofia: STEF92 Technology Ltd., 2015, pp. 447-454.
• [9] Merida A, Kharchi F.: Pozzolan concrete durability on sulphate attack. Procedia Engineering, 114, 2015, pp. 832-837.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.