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11.5 Levelling uneven surface
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On the Future of Industrial Floors
by Dipl.-Chem. Dr. Peter Seidler
Industrial Floors 1999, International Colloquium Jan 12-16, 1999 11.5 Levelling uneven surfaces
- Diagnosis and test area
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tolerances
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sealing against capillary moisture
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measuring roughness (e.g. with sand 0.1…0.4 mm)
- Pull-off-strength of > 1.5 N/mm2 from the substrate
- Moisture in the concrete (e.g. CM device)
- Coating must be able to reach zero mm thickness
- Grain size smaller than one third of the thickness
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multi-layer system if >1 mm thickness
- Ensure adhesion between layers in multi-layer systems
- Temperature must not fall below dewpoint
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temperature of substrate (°C)
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air temperature (3°C of substrate)
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relative humidity (%)
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draught air (m/sec)
- Flow characteristic influences
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performance (m2/h/worker)
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consumption (Ltr/m2/mm)
- Change of amount of filler changes the performance
- Consumption influenced by density (kg/Ltr)
- Imperviousness to liquids only up to a filling ratio 1:6
- Use power float ("helicopter") for a filling ratio 1:14
- GSP (Good Site Practice) as a standard
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