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Rammed earth is a technique for constructing foundations, floors, and walls using compacted natural raw materials such as earth, chalk, lime, or gravel. [1] It is an ancient method that has been revived recently as a sustainable building method .
Rammed earth is a wall system made of compacted earth, or another material that is compacted. [7] It is extremely strong and durable. Quality rammed earth walls are dense, solid, and stone-like with great environmental benefits and superior low maintenance characteristics.
Rammed earth is a very abundant material that can be used in place of concrete and brick. Soil is packed tightly into wall molds where it is rammed together and hardened to form a durable wall packing made of nothing more than dirt, stones, and sticks. [3] Rammed earth also provides thermal mass, resulting in energy savings.
Old school built of rammed earth in 1836–37 in Bonbaden, Hesse, Germany. Rammed earth is a technique for building walls using natural raw materials such as earth, chalk, lime or gravel. A rammed earth wall is built by placing damp soil in a temporary form. The soil is manually or mechanically compacted and then the form is removed. [23]
If walls are 'raw' earth, an infill plaster of earth with straw is used to fill the nooks between bags or courses. A finish plaster is applied on top. Roof overhangs are helpful to reduce plaster waterproofing requirements, although plaster on lower walls may be stronger and more water-resistant than plaster on upper walls.
Rammed earth is both an old and newer take on creating walls, once made by compacting clay soils between planks by hand; nowadays forms and mechanical pneumatic compressors are used. [10] Soil, and especially clay, provides good thermal mass; it is very good at keeping temperatures at a constant level. Homes built with earth tend to be ...
Contained earth (CE) is a structurally designed natural building material that combines containment, inexpensive reinforcement, and strongly cohesive earthen walls. CE is earthbag construction that can be calibrated for several seismic risk levels based on building soil strength and plan standards for adequate bracing.
The earth used for building ceramic houses is essentially a type of adobe with a higher clay content and fewer impurities. The earth and water are mixed until the substance has "the consistency of bread dough" [3] The clay/earth mixture is worked into forms, and the blocks dry over a period of one to two weeks.