Rammed earth is still popular as a sustainable solution
In response to some of the challenges of climate change, the building industry is turning to some throwback techniques to reduce site impact, but also create “thermal” structures that promote passive temperature control. Heat is not the only environmental challenge that we face. There are also major considerations on how structures can endure wildfires, earthquakes, hurricanes and tornadoes.
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One such ancient technique is rammed earth. This uses a subsoil mixture poured into a braced form in layers. It is then compacted by 50% of its volume with a tamping device before the next layer is added until each multiple batches forms a wall. Similar to a poured concrete wall, compacting the material and reducing air pockets and its drying time are part of what forms its strength.
Related: This rammed earth tiny house has a green solar roof