Concrete mixers are vital pieces of machinery used in construction sectors across the world. They are designed for a singular, simple purpose of mixing concrete to the right consistency. Yet, like any piece of heavy machinery, they need to be used correctly and maintained well too. For machine mixing, all the materials of concrete, including water, are collected in a revolving drum and then the drum is rotated for a certain period. The resulting mix is then taken out of the drum. Turn the mixer on and add the dry mix into the mixer. Allow the concrete to mix for about a minute and then add the remaining water as necessary. Mix the concrete for about 3-5 minutes, until a uniform, workable consistency is achieved. If additional water is needed, add small amounts of water sparingly.