If used as a feature wall or highlight it can be a cost effective way to create a signature style as can be seen in this playful kids bedroom.
Material other than concrete for walls.
Ashcrete actually is different and uses fly ash which is a by product from burning coal.
Straw bales are mainly used to build the inner frame of the walls of a home by replacing other building materials like concrete gypsum fiberglass plaster wood or stone.
Other potential filler materials that.
Straw bales rather than relying on new research and technology straw bale building hearkens back to the days when homes were built from natural locally occurring materials.
Straw bales if sealed properly offers a high level of insulation properties.
A stronger more flexible and greener alternative to concrete.
Straw bales are used.
Ferrock is an alternative component that uses industrial waste typically made from steel dust which works better than traditional concrete and can absorb better than concrete as well.
These fillers include waste bottom ash from coal fired power generation stations not just the marketable fly ash currently used in portland based concrete.