One of the most underrated and neglected building material in the world is inter-lockable compressed earth blocks.
Houses built by them are 10 times more energy efficient and self insulated for both cold and warm climate.
The main benefit s they do not need mortar when building and blocks are made of about 10% cement or limestone mixed with clay and gravel.
The locks can be produced on sight at a fraction of the cost of cement blocks.
They are also earthquake safe.
I have a collection of videos on Youtube playlist:
https://www.youtube.com/watch?v=-ejqXK3kI-0&list=PL_Srs9bSRWrwhYpveZZuSsRp3GmVx16WK
#CompressedEarth #Envirinment #BuildingMaterial #Construction
