Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion

M. S. Hasan, S. T. Setunge, T. C K Molyneaux, D. W. Law

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Deterioration of concrete in sulfate environment has been studied for a long time and there is still no universal agreement on precise process of deterioration. In determining the life expectancy of concrete structures exposed to sulphuric acid attack, developing laboratory investigations simulating the deterioration process can be quite challenging. First, the determination of the level of sulphuric acid concentration requires careful analysis since the process is affected by the presence of anaerobic bacteria. Secondly, the development and calibration of an accelerated testing method is required to measure deterioration in the laboratory within a reasonable time period. The research work presented here covers the development of a method for accelerated testing of concrete exposed to sulphuric acid corrosion to predict the remaining life of reinforced concrete septic tanks used in rural Victoria. The concrete specimens were prepared in the laboratory using the similar mix design and ingredients used in septic tank production for the country Victoria prior to 1990. Early results of the accelerated testing developed are presented with comparisons from other published work. © 2009 Taylor & Francis Group, London.

    Original languageEnglish
    Title of host publicationFutures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20
    Pages519-526
    Number of pages8
    Publication statusPublished - 2008
    Event20th Australasian Conference on the Mechanics of Structures and Materials - Toowoomba, QLD, Australia
    Duration: 2 Dec 20085 Dec 2008

    Conference

    Conference20th Australasian Conference on the Mechanics of Structures and Materials
    Abbreviated titleACMSM20
    CountryAustralia
    CityToowoomba, QLD
    Period2/12/085/12/08

    Fingerprint

    Concrete tanks
    Septic tanks
    Deterioration
    Corrosion
    Acids
    Concretes
    Testing
    Concrete construction
    Reinforced concrete
    Bacteria
    Calibration

    Cite this

    Hasan, M. S., Setunge, S. T., Molyneaux, T. C. K., & Law, D. W. (2008). Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion. In Futures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20 (pp. 519-526)
    Hasan, M. S. ; Setunge, S. T. ; Molyneaux, T. C K ; Law, D. W. / Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion. Futures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20. 2008. pp. 519-526
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    abstract = "Deterioration of concrete in sulfate environment has been studied for a long time and there is still no universal agreement on precise process of deterioration. In determining the life expectancy of concrete structures exposed to sulphuric acid attack, developing laboratory investigations simulating the deterioration process can be quite challenging. First, the determination of the level of sulphuric acid concentration requires careful analysis since the process is affected by the presence of anaerobic bacteria. Secondly, the development and calibration of an accelerated testing method is required to measure deterioration in the laboratory within a reasonable time period. The research work presented here covers the development of a method for accelerated testing of concrete exposed to sulphuric acid corrosion to predict the remaining life of reinforced concrete septic tanks used in rural Victoria. The concrete specimens were prepared in the laboratory using the similar mix design and ingredients used in septic tank production for the country Victoria prior to 1990. Early results of the accelerated testing developed are presented with comparisons from other published work. {\circledC} 2009 Taylor & Francis Group, London.",
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    Hasan, MS, Setunge, ST, Molyneaux, TCK & Law, DW 2008, Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion. in Futures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20. pp. 519-526, 20th Australasian Conference on the Mechanics of Structures and Materials, Toowoomba, QLD, Australia, 2/12/08.

    Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion. / Hasan, M. S.; Setunge, S. T.; Molyneaux, T. C K; Law, D. W.

    Futures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20. 2008. p. 519-526.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Hasan MS, Setunge ST, Molyneaux TCK, Law DW. Determination of life expectancy of concrete septic tanks under biogenic sulphuric acid corrosion. In Futures in Mechanics of Structures and Materials - Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials, ACMSM20. 2008. p. 519-526