The effectiveness of epoxy coating for preventing microbially induced corrosion of rock bolts

Chen, H; Kimyon, O; Chen, R; Gunawan, C; Lamei Ramandi, H; Canbulat, I; Saydam, S

The effectiveness of epoxy coating for preventing microbially induced corrosion of rock bolts

Chen, H Kimyon, O Chen, R Gunawan, C

Lamei Ramandi, H Canbulat, I Saydam, S

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Publisher:: IOP Publishing
Publication Type:: Journal Article
Citation:: IOP Conference Series: Earth and Environmental Science, 2023, 1124, (1), pp. 012097
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Chen, H
dc.contributor.author	Kimyon, O
dc.contributor.author	Chen, R
dc.contributor.author	Gunawan, C https://orcid.org/0000-0002-2957-1347
dc.contributor.author	Lamei Ramandi, H
dc.contributor.author	Canbulat, I
dc.contributor.author	Saydam, S
dc.date.accessioned	2023-09-29T06:34:22Z
dc.date.available	2023-09-29T06:34:22Z
dc.date.issued	2023-01-01
dc.identifier.citation	IOP Conference Series: Earth and Environmental Science, 2023, 1124, (1), pp. 012097
dc.identifier.issn	1755-1307
dc.identifier.issn	1755-1315
dc.identifier.uri	http://hdl.handle.net/10453/172394
dc.description.abstract	In the past two decades, the corrosion failures of rock reinforcement bolts in underground coal mines have been increasingly reported. Preliminary studies have shown that these failures were predominantly related to pitting and stress corrosion cracking. The analyses in affected mines indicated microbially induced corrosion (MIC) as one of the primary corrosion causes. As such, there is an urgent demand from industries to develop methods to mitigate MIC-associated failures of rock bolts in underground coal mines. This study examined epoxy coating to determine its effectiveness in preventing biofilm formation on steel surfaces and, in turn, averting MIC. The corrosion-causing bacteria were isolated and enriched from groundwater samples collected from the affected mine sites. Coated and uncoated rock bolt samples were prepared from the bolts and incubated in media in the absence and presence of the corrosion-causing bacteria. Fluorescence microscopy imaging found no evidence of bacterial biomass growth on the surface of the epoxy-coated steel surfaces after 30 days, while the non-coated surfaces were colonised by biomass. The observations suggest the potential of epoxy coating for bolt MIC prevention. Future studies to assess the applicability of epoxy coating in the underground mine environment are recommended.
dc.language	en
dc.publisher	IOP Publishing
dc.relation.ispartof	IOP Conference Series: Earth and Environmental Science
dc.relation.isbasedon	10.1088/1755-1315/1124/1/012097
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	30 Agricultural, veterinary and food sciences
dc.subject.classification	37 Earth sciences
dc.subject.classification	41 Environmental sciences
dc.title	The effectiveness of epoxy coating for preventing microbially induced corrosion of rock bolts
dc.type	Journal Article
utslib.citation.volume	1124
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - AIMI - Australian Institute for Microbiology & Infection
utslib.copyright.status	open_access	*
dc.date.updated	2023-09-29T06:34:21Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	1124
utslib.citation.issue	1

Abstract:

In the past two decades, the corrosion failures of rock reinforcement bolts in underground coal mines have been increasingly reported. Preliminary studies have shown that these failures were predominantly related to pitting and stress corrosion cracking. The analyses in affected mines indicated microbially induced corrosion (MIC) as one of the primary corrosion causes. As such, there is an urgent demand from industries to develop methods to mitigate MIC-associated failures of rock bolts in underground coal mines. This study examined epoxy coating to determine its effectiveness in preventing biofilm formation on steel surfaces and, in turn, averting MIC. The corrosion-causing bacteria were isolated and enriched from groundwater samples collected from the affected mine sites. Coated and uncoated rock bolt samples were prepared from the bolts and incubated in media in the absence and presence of the corrosion-causing bacteria. Fluorescence microscopy imaging found no evidence of bacterial biomass growth on the surface of the epoxy-coated steel surfaces after 30 days, while the non-coated surfaces were colonised by biomass. The observations suggest the potential of epoxy coating for bolt MIC prevention. Future studies to assess the applicability of epoxy coating in the underground mine environment are recommended.

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http://hdl.handle.net/10453/172394