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Pros and Cons for European Standards and Guidelines Concerning Grout Performance in Post-Tensioned Structures

In the case of prestressed tendons in concrete structures, grouts are pressed into the space between the steel and the surrounding material. This space must be fully filled by the grout without any voids, which is ensuring durability of post-tensioned structures. The test methods and requirements prescribed in European standards (EN 445:1996, EN 447:1996, prEN 447:2004) and in the fib-guideline:2002 for grouts for prestressing tendonds, are described in this paper, followed by a discussion with regard to their advantages and/or disadvantages. While these standards and fib-guideline give general guidance and define test procedures, there is no guidance given on grout formulation

grout; prestressing tendons; test methods; standards

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