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Update on Mitigation of Mic Steel in A Marine Environment with Coatings

Update on Mitigation of Mic Steel in A Marine Environment with Coatings
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Microbiologically Influenced Corrosion (MIC) is an important degradation mechanism for materials in civil infrastructure. Recent findings in Florida showed severe corrosion of submerged steel bridge piles associated with microbial activity. Furthermore, heavy marine growth (i.e., tunicates, hydroids, barnacles) was observed on the steel piles, which was also thought to affect the corrosion process by creating oxygen concentration cells and causing the initiation of localized corrosion. 

Product Number: 51219-209-SG
Author: John Peters
Publication Date: 2019
Industry: Coatings
$0.00
$20.00
$20.00

Microbiologically Influenced Corrosion (MIC) is an important degradation mechanism for materials in civil infrastructure. Recent findings in Florida showed severe corrosion of submerged steel bridge piles associated with microbial activity. Furthermore, heavy marine growth (i.e., tunicates, hydroids, barnacles) was observed on the steel piles, which was also thought to affect the corrosion process by creating oxygen concentration cells and causing the initiation of localized corrosion. Antifouling coatings are considered as one of the corrosion prevention methods for microbial degradation of steel. Also, polyurea coating has been used to provide corrosion protection of steel in certain industries and has favorable characteristics such as low curing time, good adhesion strength and high corrosion resistance. The objective of this research is to evaluate the performance of antifouling and polyurea-based coatings to prevent MIC of steel in submerged and tidal regions of natural waters. Research included field examination to evaluate the applicability of polyurea and water based antifouling coatings to enhance environmental resistance to biodeterioration. Coated steel coupons were installed at a field bridge site and periodically tested for microbial presence and corrosion activity. 

Microbiologically Influenced Corrosion (MIC) is an important degradation mechanism for materials in civil infrastructure. Recent findings in Florida showed severe corrosion of submerged steel bridge piles associated with microbial activity. Furthermore, heavy marine growth (i.e., tunicates, hydroids, barnacles) was observed on the steel piles, which was also thought to affect the corrosion process by creating oxygen concentration cells and causing the initiation of localized corrosion. Antifouling coatings are considered as one of the corrosion prevention methods for microbial degradation of steel. Also, polyurea coating has been used to provide corrosion protection of steel in certain industries and has favorable characteristics such as low curing time, good adhesion strength and high corrosion resistance. The objective of this research is to evaluate the performance of antifouling and polyurea-based coatings to prevent MIC of steel in submerged and tidal regions of natural waters. Research included field examination to evaluate the applicability of polyurea and water based antifouling coatings to enhance environmental resistance to biodeterioration. Coated steel coupons were installed at a field bridge site and periodically tested for microbial presence and corrosion activity. 

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