Chemistry:Light clay
Light clay (also light straw clay, light clay straw, slipstraw) is a natural building material used to infill between a wooden frame in a timber framed building using a combination of clay and straw, woodchips or some other lighter material.
History
A mixture of clay and straw was used as an infill material for timber framed building from at least the 12th century in Germany and elsewhere in Europe.[1] Renewed interest in traditional building methods developed from the 1980s after which various natural building architects and builders started promoting the use of light clay.[2]
Usage
Local clay, often local subsoil, is mixed into a slurry with water and then combined with straw or wood chip or other similar material. Wood chips can vary in size from sawdust to 5 cm in diameter.[2] The ratio of clay to other ingredients can be adapted to either increase thermal mass or insulation properties.[3] The mixture is provided with additional structural strength using wattles. When used externally it can be protected with a Lime render or a clay render.[4]
See also
- Adobe
- Cob
- Wattle and daub
- Wychert
References
- ↑ "An Introduction to Traditional and Modern German Clay Building". http://www.networkearth.org/naturalbuilding/clay.html. "Building with clay has a long tradition in Germany and other European countries. Framed structures (half-timbered houses) from the 12th century, filled with a mixture of clay and straw fibers, still exist."
- ↑ 2.0 2.1 Kennedy, Joseph F.; Wanek, Catherine; Smith, Michael G. (2002). The art of natural building: design, construction, resources. pp. 165–170. ISBN 978-0-86571-433-5. https://books.google.com/books?id=054_i8KdcCAC&q=%22light+clay%22+natural&pg=PA167.
- ↑ Chiras, Daniel D. (2000). The natural house: a complete guide to healthy, energy-efficient. p. 250. ISBN 978-1-890132-57-6. https://books.google.com/books?id=z_Y2AObA-joC&q=light+clay+natural&pg=PA250.
- ↑ "Earth in non-loadbearing walls". http://www.earthbuilding.info/gb/03_material/03-3c_building_techniques.htm.
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