Another Demo Day project was completed yesterday. This was a garage addition with a simple 42" deep trench foundation using a cement & sand mix with foam added to reduce density to 117 pcf. We have been getting 7 day breaks of about 2400 psi with this mix as a lab mix, so we were confident of being able to provide a quality footing/foundation.
We also wanted to test our old Mayco C30 trailer pump and the density gain we'd get with Cretefoam. Our pump performed flawlessly (it was probably the new $70 tires we put on earlier in the day.) This mix pumped nicely, though slowly, as we obviously need some rebuilding of the pump. Pumping through 100 feet of 2 inch hose, we had a density change of only 2 pcf. We pumped about 5 1/2 yards of material.
Manatt's, the local producer with whom we work on our Demo Days projects, had a really busy day, so we did not see our truck until 5:00, when Russ, one of our old "friends" pulled up.
Russ knows the routine for dosing the truck, so we got rolling pretty quickly. Everything worked as planned and when completed, the owner brought out a cold beverage for everyone.
This was not a big project, but did save 15% in materials by using cellular concrete and made a good demo project.
