ABSTRACT
Repair of concrete structures must be considered very carefully and preferably only be used if the cause of the damage has been clarified and will be remedied. Furthermore, the repair must be able to achieve a durability that is comparable to the remaining life of the surrounding structure. Correct repair and possibly supplementary protection of concrete structures is in many cases a more sustainable and cheaper solution than replacing the same structure.
By March 2024, the authorities responsible for the management and maintenance of infrastructures in Denmark publish new General Work Specifications for the repair and protection of concrete structures.
The paper summarizes how the common European standards for repair and protection of concrete structures (the EN 1504 series) have been and will be further implemented in Denmark. Examples from the specifications are shown. The approach is applicable for other countries as well. To apply the standards the presumed methodology must be used.
It is presupposed that personnel have the necessary skills and adequate equipment and resources to design, specify and execute the work in accordance with the relevant part of EN 1504 and the requirements of the project specification. The skill levels for each function in the value chain of a repair project has been defined in the standard DS 2425. A training programme has been defined as well and training lectures are being planned.
The paper gives short illustrative examples of typical obstacles that can be met by the inspector of concrete structure to be repaired, the person in charge of the elucidation of defining the cause of damage and hence the extend, the person in charge of the design, the person in charge of pricing the works, the person in charge of the supervision and the person in charge of the execution.
