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Pro047

Assessment of destructive test methods to determine the covercrete quality of structures



Author(s): A. Leemann, C. Hoffmann, V. Malioka, M.H. Faber
Paper category: Workshop
Book title: International RILEM Workshop on Performance Based Evaluation and Indicators for Concrete Durability
Editor(s): V. Baroghel-Bouny, C. Andrade, R. Torrent, K. Scrivener
ISBN: 978-2-912143-95-2
Pages: 215 - 222
Total Pages: 8
Language: English


Abstract: 
The quality of the covercrete and the spatial variability of its properties are important factors for the durability of concrete structures. Moreover, they are the basis for models developed for maintenance planning and service life prediction. In this study 240 cores were taken from two deck and two wall elements of a new opencast tunnel in order to assess the meaningfulness of different test methods.
The correlation of compressive strength which is usually used to classify concrete and chloride conductivity shows that the latter is also a suitable method to characterize the quality of on-site concrete. On the other hand, there was a poor correlation between compressive strength and oxygen permeability indicating that the later is very sensitive to microstructural defects present in on-site concrete.


Online publication: 2007
Publication Type: full_text
Public price (Euros): 0.00