This Guy Creates Wood Ash Cement Using Only Primitive Techniques
%2Favatars%2FVy5toVC0BNbz.jpg&w=96&q=75)
/2023/01/29/image/jpeg/9NApzpyi3C9Bf1dV2LWDlUXhroqY1oaMa9lTQR9B.jpg "Former NASA engineer gets back at thieves with glitter-bombs")
/2022/12/24/image/jpeg/oxlrVm4IcgUGjFMNF5zEHjQBGMor1ZVaIETjIm28.jpg "How a wildlife photographer engineered a thriving ecosystem in his backyard")
/2023/09/23/image/jpeg/Kap6NAa8IoTyQmZQEwB4waL2MWykBpyJc9piLpRK.jpg "The genius engineering behind 3D-printed rockets")
/2023/09/22/image/png/XFtYdTc2b3TtGseTakit2zAk7zByRIYyUKGewjOl.png "Small robot that can reforest the whole planet")
/2023/09/21/image/jpeg/CBVh8844CyZW0BUmphFlksoDPFxyFFKSmNCRoJFa.jpg "Motagua River: The most trashed river on earth")
/2023/09/20/image/jpeg/fpEIKq8CApvDrs3NDGbRHy8i9cNeVPW2x22WkG7e.jpg "Why China and Russia can not match USS Gerald R. Ford")
/2023/09/19/image/png/PKifNVHrveQgnpB0zgnbhvhDDYJ7GImzRm5HO8DV.png "How this vessel lays underwater cables")
/2023/09/18/image/jpeg/5EPY7kBqlcgs6O9kzgBTWKiu20VY3hN5alc1SXDA.jpg "How does the Chinese J-20 pose a threat to U.S. Air Superiority")
/2023/09/17/image/jpeg/jazsdM1teNAro0jxTtizGax95QgaEmQkSO3DendJ.jpg "X-ray free-Electron lasers - most engineered light source?")
/2023/09/16/image/jpeg/MPAi9QkFPLHHvptOBin7mw2HEewNJYPVQUHSXCak.jpg "Why only icebreakers can break ice & other ships can’t")
Cement is a modern building material that is used in almost every structure around the world. From modest domestic homes to towering skyscrapers, cement is used in abundance.
But what about cement made using only naturally found materials and with primitive techniques? This fascinating video from Primitive Technology presents one method of primitive cement production.
The material is made from re-fired wood ash mixed with crushed terracotta. The exhaustive process involves burning bark and leaves in a kiln at high temperatures to produce well burnt white wood ash.
This ash is then well mixed with water. The excess water is poured off and the resulting paste is made into small pellets and allowed to thoroughly dry.
Once dry, the pellet is heated until red hot, then dropped into a bucket of water. It boils the water and dissolves. The resulting paste is then mixed with crushed terracotta tiles, recovered from a previous project.
This is then formed into a cube and left for three days. After this time, it does not show any signs of disintegration, even after being submerged in water for 24 hours.
The host of Primitive Technology hypothesizes that the resulting material may have useful applications in holding bricks together where limestone or snail shells are not available for cement making.
He notes that wood ash is pretty easy to produce and is often a waste product from other projects or living scenarios. The host intends to continue his research into primitive cement making techniques.
Via: Primitive Technology
SHOW COMMENT (1)
/2023/08/30/image/jpeg/Llkj2YI4zCWyQWM06dnC9PZHBRzZLT4na9uWmRXZ.jpg "Maybe you can hear sounds in space after all")
/2023/07/21/image/jpeg/pwUEpl3SEm3I6iWC1XTLeopv0EMwhfrJ684imYyT.jpg "Are wines losing the battle against climate change?")
/2023/09/23/image/jpeg/EkaUs1PFMs22T2bo39a8T3BslgZ8qxot4rm0p91i.jpg "Upcoming Northern Lights to be the strongest in 20 years")
/2023/09/23/image/jpeg/Ht9SoPpiJDjL8laVISlPyrfNrL4LH0pME1Kay3it.jpg "NYPD now has a robot police officer for its Manhattan subway")
/2023/09/11/image/jpeg/mw8NLvKzCuvSD401qb27onireFyOORpjyaAdeGr5.jpg "Can you improve on the ISS? Nanoracks hopes Starlab will fit the bill")
/2023/09/12/image/jpeg/E1LfUWjqRrg0bFqBnRzB7XzmfJAd6YPNclMl5I9n.jpg "How AI can revolutionize health on long-duration spaceflights")
/2023/08/07/image/jpeg/Ud2zDGb2iGOiBAo4pvLO543XFvNGkPlUEZCF7qSY.jpg "Why do matter and the universe exist at all? Scientists get closer to the answer")
/2023/08/03/image/jpeg/a4peRyX4ysBOqbw4BbDHzMCIbTjXOWejwu83UrQp.jpg "You can hear silence, claim researchers, settling an old debate")
/2023/09/23/image/jpeg/9fsKSWRxyPmZZ6TbJoC0urwAKJUdeMfRlPRYW3CR.jpg "Earth’s crust and mantle grew in sync, study finds")
/2023/09/24/image/jpeg/Qd9TFF9rqwLu44A9j9PM3Gb8NzPOlYBqvBVB8eQh.jpg "These adorable Japanese robots are being used for elder care")