Non destructive testing of the concrete cover-evaluation of permeability test data

Author(s): F. Jacobs, F. Hunkeler
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: 207 - 214
Total Pages: 8
Language: English

Abstract: 
The durability of reinforced concrete structures is determined to a great extent by the quality of the outer part of concrete, e.g. the concrete cover of the reinforcement. The European concrete standard EN 206-1 gives guidelines to produce durable concrete which are mainly based on provisions for the composition of concrete. It also contains some information for proper curing. In practice, e.g. curing is not always executed as planned. A procedure is, therefore, needed to check the quality of finished concrete elements. To evaluate the quality of the concrete cover a research project using non destructive air permeability measurements is carried out. Measurements were conducted in the laboratory as well as on concrete structures. Air permeability is influenced by concrete composition, moisture content and temperature of the concrete and the actual condition of the concrete cover, e.g. cracks, surface coatings. Advice will be given how concrete quality can be estimated based on air permeability measurements.

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