Limitations of EN 13791

Evaluation of the compressive strengths of
concrete on new and existing structures

When converting structures to other uses following damage, negative results of the conformity and acceptance tests, faulty execution of the construction, or when the adequacy  of the existing compressive strength is in doubt it may be necessary to evaluate the actual compressive strength of the concrete used in the structure (in situ).  

For a design in accordance with the currently valid standards (DIN 1045-1 and/or EC 2), the standards of series DIN 1048 can be used only to a limited extent, since these contain only statements on the classification into compressive strength classed based on...

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