| Download | - View accepted manuscript: Preliminary assessment on bacterial deterioration of asbestos reinforced concrete pipes for water distribution (PDF, 370 KiB)
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| Author | Search for: Razban, B.; Search for: Chen, W.; Search for: Wang, D. L.1; Search for: McMartin, D.; Search for: Cullimore, R. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Conference | NACE 2010: 14 March 2010, San Antonio, Texas, USA |
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| Subject | asbestos reinforced concrete (ARC); patina; microbiologically influenced corrosion; acid producing bacteria; Water mains |
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| Abstract | Asbestos reinforced concrete (ARC) pipes were commonly used for drinking water distribution networks in North America, primarily from middle1940s to early 1980s. In the City of Regina, Canada approximately 68% of all water mains are ARC pipes, to a total length of 535 km. In this preliminary research, it was found that bacteriological activities within the internal surface coating (patina) as well as within the concrete could induce bio-deterioration, which eventually leads to pipe failures. Identification of the bacterial consortia was performed using the S43048 protocols for the chromatographic detection of the C5 to C20 fatty acids methyl esters (FAME). Using proprietary library software, high similarity indexes were statistically generated, confirming the ubiquitous nature of the bacterial consortia within the patina (a distinctively fibrous internal coating) of various pipe samples. Bacteriological activities caused deterioration to the ARC pipes was primarily related to acid producing bacteria. . These bacteria are fermentative in the reductive environments, generating sufficient fatty acids that would reduce the pH into the acidic range of 3.5 to 5.5 and could cause structural failures in the concrete. |
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| Publication date | 2010-03-14 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 53228
NRC-IRC-20815 |
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| NPARC number | 20373864 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 01b6c6e9-bab8-4711-a742-f5d725714b01 |
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| Record created | 2012-07-23 |
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| Record modified | 2020-07-14 |
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