Roman cupola in light aggregate concrete 100 AC Villa Adriana. Photo: K. Hertz
Light aggregate concrete does not have the same problems with cracks and frost damages etc. as more dense concrete. Modern investigations and more than 2000 years experiences with a large number of walls, floors, arches, vaults, cupolas, water basins, quays, bridges, and tunnels from Aswan to Scotland document that the material is extremely durable for the weather, water, mechanical impact, earthquake, and fire.
The new constructions are insulating like wood without problems of rot and fire, and wood is therefore not anymore needed in resource economic buildings.