Corrosion behavior and mechanism of ductile iron with different degrees of deterioration of cement mortar lining in reclaimed water pipelines.

ABSTRACT: The deterioration of cement mortar lining (CML) has a significant impact on the corrosion of ductile iron pipes, and further affects the water quality of transported reclaimed water. In this study, the different coverage levels of CML (such as lined (100%), 90% and 50% lining coverage and unlined) were used for simulating different degrees of deterioration of CML. Electrochemical measurements, water quality testing and corrosion product microanalysis were carried out to monitor the corrosion process and investigate the corrosion mechanism. The results showed that the order of maximum corrosion rate under different conditions was: 50% lining coverage (0.159 mm a^-1) > unlined (0.110 mm a^-1) > 90% lining coverage (0.042 mm a^-1) > 100% lining coverage (0.007 mm

SUBMITTER: Liu Y 

PROVIDER: S-EPMC9057434 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature