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...

Related articles:

Issue 2020-02 In-situ concrete compressive strength in existing structural frameworks

New methods according to E DIN EN 13791:2018

Existing structural frameworks need to be recalculated in accordance with currently applicable standards owing to building conversion and subsequent changes in load levels. Concrete compressive...

Issue 2016-02 Assessment based on a small number of samples

Determination of characteristic compressive strengths in existing structures –

Construction in existing buildings has gained increasing ­significance in the construction industry in recent years. When the structural framework of existing buildings is modified, or if ­extreme...

Issue 2020-02 Background and test methods

Classification of ultra-high-performance concrete

The DAfStb Guideline on “Ultra-High-Performance Concrete” will significantly expand the range of structural concretes compared to DIN EN 206. Compressive strength and axial post-cracking tensile...

Issue 2011-03 Compression testing machines

Tests for high-strength and high-performance concrete

Mortar and concretes with a compressive strength of up to 800 N/mm² are currently under development. Typical fields of application of high-strength concrete and high-performance concrete are: »...

Issue 2016-02 New edition 2015/2016

DBV codes of practice update –

New editions of DBV-Merkblatt on architectural concrete 2015 [1] The philosophy of the DBV-Merkblatt for architectural concrete is to promote dialogue and communication among project participants...