Do you need a concrete mixer to mix 20, 80 pound bags ...
2012-10-8 · Joined Mar 10, 2009. ·. 5,832 Posts. #6 · Oct 7, 2012. Only show this user. Cleveman, you must be Hercules. I mixed enough concrete for 12 sonotubes, each 10 inch diameter, and 3-4 feet deep. That is a bit over 20 cubic feet. I mixed each batch in a plastic wheelbarrow using stone, sand and portland cement purchased from a local supplier.
