A typical portable concrete mixer uses a small revolving drum to mix the components. For smaller jobs the concrete made at the construction site has no time lost in transport, giving the workers ample time to use the concrete before it hardens.A mini concrete mixer machine is a small-sized piece of equipment designed to mix cement, sand, gravel, and water to make concrete. It is ideal for small construction projects or DIY enthusiasts who want to make their own concrete at home.Having a mixer means you have more time on your hands to get other construction work done. Workers don't have to deplete themselves mixing, so they're more productive elsewhere. Instead of having to arrange for the cement to be mixed remotely, an on-site mixer brings the materials where they are needed most.