Assessment of routine cover measurements during the upgrading of fifteen bridge structures near Keimoes, South Africa

Author(s): P. D. Ronné
Paper category: Workshop
Book title: RILEM International workshop on performance-based specification and control of concrete durability
Editor(s): D. Bjegović, H. Beushausen, M. Serdar
ISBN: 978-2-35158-135-3
e-ISBN: 978-2-35158-136-0
Pages: 451 - 458
Total Pages: 8
Language: English

Durable reinforced concrete structures rely on the achievement of adequate cover, as a primary parameter, to resist corrosion of the embedded reinforcement. Practical aspects influencing the implementation of performance-based specifications for cover are presented, with particular emphasis on technical aspects such as the minimum sampling area and cover survey methodology. A detailed statistical analysis of cover data for the construction of fifteen bridges near Keimoes, South Africa provides an indication of the accuracy of achieving the specified nominal cover. The variability of the project cover data is quantified and compared to previous South African studies, indicating a significant improvement in the absolute and relative variation. The variance of cover data for the case study also generally complied with European standards for permissible deviation in the achievement of cover. The high degree of compliance achieved for cover in terms of the project specifications suggests that bridges with improved quality have been constructed.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00

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