CSA Aircrete Formula – 1st Test Batch
I use a digital scale to weigh my ingredients. I use 15 pounds of Cement All, 3 pounds of water, 3/4 of a pound of foam, 1 teaspoon of plasticizer, and a pinch of fiber.
I start by adding a teaspoon of the plasticizer to the water.
Then slowly add the Cement All to the water while spinning the slurry with a paint mixing attachment on a drill.
I don’t want any clumps or dry cement on the bottom or sides of the pail. I use a dowel to hand stir the mix to prevent this.
I’ll add the glass fibre and mix that in.
Now the slurry is ready for foam. I connect my air hose to the Foam Mate and once it’s flowing well and becomes thick I add some to the slurry pail. I have a mark on my stir stick that approximates the amount of CSA aircrete I need to fill one 36″ form. For a five gallon pail, I need it filled to the 8″ mark as a minimum.
I think on this first batch I added a little too much foam. But I decided to go ahead with it anyways knowing that the density of this first panel would be lighter.
Pouring CSA Foamcrete into Forms
I pour the CSA aircrete into the form, giving it a jiggle to settle the mix into the corners.
Add Wire Mesh for Strength
Once it begins to thicken, I lay in a galvanized wire reinforcing grid. Pressing it down so it settles right in the center. Then I smooth the surface with a small trowel.