Norut Narvik, P.O. Box 250, N-8504 Narvik, Norway.
Tel. +47 76 96 53 50 E-mail: info@tek.norut.no
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RECON- Renewal of Concrete Infrastructure
| Start date: | 01.01.2004 |
|---|---|
| End date: | 31.12.2008 |
| Project manager: | |
| Funding: |
The Norwegian Research Council |
The program is financed by the Norwegian Research Council and has as primary goal:
Increase understanding of corrosion of reinforcing in concrete and its effect on concrete structure`s capacity and safety, as well as to develop new innovative materials in this context.
The program will be performed mainly in the period 2005 - 2008.
Corrosion of reinforcement in concrete
Reinforcement corrosion represents a large maintenance challenge for existing concrete structures. On a national basis the damages are extensive and cost society significant economic resources. Norut Technology is working through the strategic institute program RECON with the development of reliable methods for the calculation of the residual capacity of concrete structures that have been subject to reinforcement corrosion.
Ullasund bridge
Ullasund bridge was torn down only 29 years after it was built, due to extensive corrision damage.
The most important causes of reinforcement corrosion is penetration of chloride or carbonatisation of concrete. The chloride often comes from seawater or from de-icing salts. In earlier periods it was not unusual with cast-in chlorides in the form of chloride-containing aggregates or from chloride-containing additives.
Corrosion damage on reinforcement as a consequence of chloride penetration
Calculation of strength and stiffness for concrete structures exposed to reinforcement corrosion
Since reinforcement causes significant costs for repair and in some cases can threaten a structure`s loading capacity and safety, it is important to develop methods for calculating stiffness and strength for damaged structures. Norut Technology uses non-linear finite element analysis to tackle this challenge. Finite element analysis is performed with advanced computer programs and is an important aid for calculation of residual capacity of damaged and repaired concrete structures.
Simulation of concrete beam trial using the finite element method
Contact person:Roy Antonsen tlf. +47 76 96 53 56
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