Transferability of laboratory test results

Determining freeze-thaw resistance of precast products for road pavements under real-life conditions

Since February 2005, the freeze-thaw resistance of concrete pavers had to be determined in the modified slab test in accordance with DIN EN 1338. Some clients favor the CDF method even though there are some discrepancies between laboratory test results and the real-life behavior of installed pavers. For instance, there were some isolated cases in which the facing layer of installed double-layer concrete pavers detached from the core after only a few winter seasons despite the fact that these products had previously passed the CDF tests at the laboratory (Fig. 1). Research project No. 17996 N...

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Issue 2018-02 Freeze-thaw resistance of concrete products

New research findings

The freeze-thaw resistance of concrete paving blocks must be verified by the slab test (DIN EN 1338). Sometimes clients in Germany demand the CDF method (DIN CEN/TS 12390-9). Independent of the test...

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Issue 2013-02 Current findings with respect to the XF2 freeze/thaw test method

Freeze/thaw resistance at moderate water saturation levels

Generally accepted, internationally recognized methods (CIF and CDF) exist for testing the freeze/thaw resistance of concrete at high water saturation rates irrespective of the simultaneous action of...

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Issue 2013-02

Influence of various de-icing agents on the durability of concrete products

According to information published by the Bundesverband Straße, Landschaft, Garten e.V. (SLG; Federal Association for Road Construction, Landscaping and Gardening), the 2009-10 and 2010-11 winter...

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Issue 2017-02 New findings and forecast models

Freeze-thaw attack and damage

The freeze-thaw damage pattern of concrete is primarily linked to the water contained in the pore system, which is also referred to as the saturation level. If a certain critical saturation level is...

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Issue 2019-09

Reliable assessment of resistance of concrete paving blocks to freeze-thaw with de-icing salt

Verification of the resistance of concrete paving blocks to freeze-thaw with de-icing salt in accordance with DIN EN 1338 [DIN38 has been required from manufacturers since 2005. The test method for...

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