According to DIN 18560-7, a heavy-duty industrial floor consists of a defined wear layer with mineral hard materials in accordance with DIN 1100. This results in industrial floors that guarantee above-average flexural and compressive strengths, very favourable abrading values and constant slip resistance.
A hard screed according to DIN EN 13 318 is a screed layer made of hard materials that has an increased and defined resistance to wear and abrasion.
For hard material layers, hard materials according to DIN 1100 are used in the hard material groups A, M and KS. The thickness of hard material layers is specified in DIN 18560-7 Table 6 depending on the load.
A distinction is made between two paving methods for hard material layers: "fresh-on-fresh", i.e. on the still fresh load-bearing concrete, or subsequently in combination with hardened load-bearing concrete.
The discussion on the topic of hard material layer or hard material infill has intensified in recent years, both in Germany and abroad. The planned use of the industrial floor, i.e. its future use and load, is of decisive importance.
A comparison table of the two systems shows the advantages and disadvantages of each:
Images: Ekaterina Heier for KORODUR
Source: KORODUR
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