I have spent the last few years researching how concrete walls can be recycled.
This is the second article in a series.
In the first, I explained how I designed a wall of concrete to be recycled using a technique called ‘coated’ concrete.
Coated concrete is a common material used for building materials that are treated with chemicals to remove contaminants, such as pesticides.
However, it can also be used for constructing walls.
For the new concrete wall I used a mixture of the two.
The mixture is made up of one part cement to one part aluminum.
As I said before, this mixture is then coated with an additive called ‘phosphate-cadmium-coated aluminium’ (PCAA).
PCAA has a shelf life of between 20 years and 30 years.
I had to work out how to make the cement coat, as the coat needs to be chemically stable for this coating to work.
It was important to use PCAA that is compatible with the cement I wanted to coat the concrete wall with, as PCAA does not have the same properties as concrete.
So I used PCAA on the concrete, leaving out the coating.
I then added another coating to the concrete to keep it stable.
This second coating was the final coat.
Once I had made the final coating, I applied the second coat.
Now I could apply the coating to any type of concrete, including concrete that is already coated with PCAA.
This would be a good time to mention that PCAA has many uses, including for coating concrete in the environment.
Using PCAA can also help to reduce the size of the concrete and make it easier to move.
PCA can also make concrete more resistant to flooding and mold.
To find out more about PCAA, please see my previous article on its use in cement.