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 2020-01

Assessment of frost and freeze-thaw damage to concrete pavers (Part 2)

The first part of this article dealt with the different patterns associated with freeze-thaw damage, the impact of cracks occurring in products, and the influence of installation and use on the onset...

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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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Issue 2019-12

Assessment of frost and freeze-thaw damage to concrete pavers (Part 1)

High weather resistance of concrete pavers is crucial wherever paved surfaces are exposed to frequent freeze-thaw cycles. In this respect, it should be noted that the climatic conditions prevailing in...

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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 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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