Durability rehabilitation and promotion of reinforced concrete structures in tidal and splash range of deteriorated wharfs in marine environment

Corrosion deterioration of reinforced concrete structures in tidal and splash range has always been an urgent concern of scientific researchers and wharf managers, especially for that serving for more than 20 years in marine environment. Through on-site detection and chemical analysis, it has been f...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-09, Vol.304 (2), p.22080
Main Authors: Wu, Ye, Zhang, Jie, Li, Senlin, Feng, Longhai, Jiang, Chao
Format: Article
Language:English
Subjects:
Chemical analysis
Concrete
Concrete structures
Corrosion
Desalination
Durability
Electrochemical desalination
Electrochemistry
Marine environment
Offshore structures
Rehabilitation
Reinforced concrete
Reinforcing steels
Service life
Spalling
Wharves
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Summary:Corrosion deterioration of reinforced concrete structures in tidal and splash range has always been an urgent concern of scientific researchers and wharf managers, especially for that serving for more than 20 years in marine environment. Through on-site detection and chemical analysis, it has been found that reinforced structures in tidal and splash range of a passenger terminal in Zhoushan city suffer severe corrosion destructions such as rust expansion of steel bars, concrete cracking and spalling due to technical conditions at the initial stage of construction and insufficient awareness of durability. Meanwhile, chloride content near the surface of steel bars in concrete exceeds the critical corrosion value. In order to rehabilitate and improve the durability of reinforced concrete structures in tidal and splash range of this wharf, a combined programme of partial consolidation and electrochemical desalination is proposed and applied, which shows good performances and ensures the service life of the structure as long as possible.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/304/2/022080