Rammed earth is more abundant, potentially cheaper, and has far better sound and thermal insulation properties: https://www.bbc.com/future/article/20220705-the

Rammed earth is more abundant, potentially cheaper, and has far better sound and thermal insulation properties: https://www.bbc.com/future/article/20220705-the-sustainable-cities-made-from-mud https://www.bbc.com/future/article/20220705-the-sustainable-... It is more labor-intensive but easily automated, at least one start-up has worked/is working on this: https://www.youtube.com/watch?v=4TXj5IIkUIY https://www.youtube.com/watch?v=4TXj5IIkUIY Rammed earth panels can also be prefabricated and delivered to build site via truck: https://www.youtube.com/watch?v=WFddMSRel4A https://www.youtube.com/watch?v=WFddMSRel4A The city of Shibam in Yemen shows how a high-rise rammed earth/adobe city might look. It's possible to adapt this technique to wet climates with appropriate plasters and maintenance: https://www.youtube.com/watch?v=zm8OGIZ7tag https://www.youtube.com/watch?v=zm8OGIZ7tag