Clay screed
Clay screed or rammed earth floor is a screed that usually also represents the wear layer of the floor.
Rammed earth floors have been known since prehistoric times , including in megalithic systems . In some cases, floor slabs are preformed and dried and placed in a bed of clay.
The differently thick layers of clay were tamped down until no more impressions were perceptible. Today coating of mud in different regions in attics, is cellars , barns and antennas used. It creates a soil with moisture-regulating properties. Rammed earth floors were typically used in storage cellars for fruit and vegetables. As long as there is no moisture problem due to waterlogging or pressing water , the clay floor ensures evenly cool temperatures in the basement by allowing the soil moisture to evaporate slowly.
Clay is mixed with the addition of barley chaff , chaff , cattle hair and water, applied as a screed to the sub- floor and tamped down. The cracks that appear after drying are rammed until they no longer appear. If hard screed is required, bovine blood and ashes are added to the top layer. Thickness 6–10 cm, weight 120–200 kg / m².
In some East Prussian homesteads, even in the 1940s, the floor on the first floor was made of rammed earth .
In many warm southern countries, such as along the Egyptian Nile, the rural population sleeps directly on the rammed earth floor.
See also
literature
- Märta Strömberg : The megalithic tombs of Hagestad. On the problem of grave structures and grave rites . Acta Archaeologica Lundensia Volume 8. Bonn and Lund 1971.
Individual evidence
- ↑ Loam is a sediment that has arisen from the weathering of rock and consists of clay (clay minerals) and quartz grains, mixed with other weathering residues, mainly iron compounds and lime. Clay is not plastic like clay; clay-rich loams are called fat, clayey loams are called lean. There is no sharp boundary between clay and loam.