Model for natural carbonation prediction (NCP): Practical application worldwide to real life functioning concrete structures

•NCP model was employed to predict natural carbonation in 69 concrete structures.•NCP model gives realistic predictions for natural carbonation in structures.•The model’s accuracy is of the same range as established code – type models.•NCP model may be employed for practical purposes comprising desi...

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Bibliographic Details
Published in:Engineering structures 2020-12, Vol.224, p.111126, Article 111126
Main Author: Ekolu, Stephen O.
Format: Article
Language:English
Subjects:
Bridges
Carbonation
Concrete
Concrete construction
Concrete structures
Natural carbonation
Prediction model
Predictions
Reinforced concrete
Reinforced concrete structures
Steel corrosion
Urban areas
Urban environments
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Summary:•NCP model was employed to predict natural carbonation in 69 concrete structures.•NCP model gives realistic predictions for natural carbonation in structures.•The model’s accuracy is of the same range as established code – type models.•NCP model may be employed for practical purposes comprising design and analysis. A new, natural carbonation prediction (NCP) model was used to make predictions that were in turn compared with actual data measurements done on 69 real life functioning concrete structures located in various parts of the world of different climate zones. The existing reinforced concrete structures consisted of buildings, bridges and highway structures that were one (1) year to 70 years old, located at the urban settings of Johannesburg (South Africa), Bhopal (India), Taipei (Taiwan), Seoul (South Korea), Turin (Italy), Blenio (Switzerland), Brasilia (Brazil) and Tallin (Estonia). All data employed in the present study were taken from the various literatures. The NCP model gave realistic predictions of the measured natural carbonation in the various concrete structures. Evidently, the model can be used for practical carbonation prediction, design and analysis of concrete structures.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2020.111126