Performance-based quality control for concrete durability

Author(s): V. Årskog, O. Sengul, O.E. Gjørv
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: 223 - 227
Total Pages: 5
Language: English

Abstract: 
In the present paper, current experience with durability design and performance-based quality control of Norwegian concrete harbors structures is briefly outlined and discussed. As an overall durability requirement, a risk level of 10% for steel corrosion to occur during a certain period of service is required. Based on the risk analysis, requirements to both chloride diffusivity and concrete cover for the given structure are established. For the given concrete, the relationship between chloride diffusivity and electrical resistivity is also established. Then, the control of chloride diffusivity based on measurements of the electrical resistivity, is included in the regular concrete quality control during the construction process. This control is carried out on the same concrete specimens as that used for the testing of compressive strength. In addition, a control of obtained chloride diffusivity and concrete cover on the construction site is also carried out. When the construction process is over, a new risk analysis provides the basis for documentation of obtained durability. If the obtained durability is distinctly inferior to that specified, protection of the concrete surface by a proper coating or surface treatment should be considered.

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