Chaudhari Bhavesh, Panda Biranchi, Šavija Branko, Chandra Paul Suvash
Centre for Intelligent Cyber Physical Systems, Indian Institute of Technology Guwahati, Assam 781039, India.
Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam 781039, India.
Materials (Basel). 2022 Jun 16;15(12):4279. doi: 10.3390/ma15124279.
Microbiologically induced concrete corrosion (in wastewater pipes) occurs mainly because of the diffusion of aggressive solutions and in situ production of sulfuric acid by microorganisms. The prevention of concrete biocorrosion usually requires modification of the mix design or the application of corrosion-resistant coatings, which requires a fundamental understanding of the corrosion process. In this regard, a state-of-the-art review on the subject is presented in this paper, which firstly details the mechanism of microbial deterioration, followed by assessment methods to characterize biocorrosion and its effects on concrete properties. Different types of corrosion-resistant coatings are also reviewed to prevent biocorrosion in concrete sewer and waste-water pipes. At the end, concluding remarks, research gaps, and future needs are discussed, which will help to overcome the challenges and possible environmental risks associated with biocorrosion.
微生物诱导的混凝土腐蚀（在污水管道中）主要是由于侵蚀性溶液的扩散以及微生物原位产生硫酸所致。防止混凝土生物腐蚀通常需要修改配合比设计或应用耐腐蚀涂层，这需要对腐蚀过程有基本的了解。在这方面，本文对该主题进行了最新综述，首先详细阐述了微生物劣化的机制，接着介绍了表征生物腐蚀及其对混凝土性能影响的评估方法。还综述了不同类型的耐腐蚀涂层，以防止混凝土下水道和污水管道中的生物腐蚀。最后，讨论了结论、研究空白和未来需求，这将有助于克服与生物腐蚀相关的挑战和可能的环境风险。
