View Single Post
Old 12-22-2018, 06:11 PM   #4254 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,225
Thanks: 24,372
Thanked 7,357 Times in 4,757 Posts
how

Quote:
Originally Posted by freebeard View Post
Do you know how he did it? Detergent in the mix or forced air bubbles?

My father took a 5-panel door into a room once and stripped the paint in 1/2 hour. He never told me how he did that.
yes,it was cellular concrete.He used DuPont 'Duponal' surfactant,with a very strong surface tension bond.
The surfactant was diluted in water,then forced through a foam-gun (Valved PVC tube full of stainless steel mesh),under about 150-psi air pressure,and injected into the back of a Ready Mix truckload of 8-sack,sand mix,and mixed in.The bubbles are so strong they survive the torture of the mixing and ram-forced passage through a concrete pump and hose.It's trippy stuff! Hollywood special effects!
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
 
The Following User Says Thank You to aerohead For This Useful Post:
freebeard (12-22-2018)