Building bricks for extreme weather.
Ceramic used for bricks.
The earliest fired bricks appeared in neolithic china around 4400 bc at chengtoushan a walled settlement of the daxi culture.
Ceramic building material often abbreviated to cbm is an umbrella term used in archaeology to cover all building materials made from baked clay it is particularly but not exclusively used in relation to roman building materials.
Of course these brick types are not set in stone even if the bricks themselves are.
These are samples of common materials used to create bricks and researchers often experiment with modifying levels of clay sand lime fly ash cement and other materials in any given brick to find combinations with optimal properties.
The bricks typically line the inside of a kiln furnace fireplace etc and serve as great insulators making heat loss minimal and energy use.
Kiln bricks also referred to as fire bricks or refractory bricks are made from ceramic refractory material that can withstand extremely high temperatures such as those achieved in kiln firings.
It is a useful and necessary term because especially when initially found in archaeological excavation it may be difficult to distinguish for example.
Ceramic or fired brick was used as early as 3000 bc in early indus valley cities like kalibangan.