Can a concrete pump mix be poured using a crane and bucket? Yes, you can pour (place) concrete that is mixed for a pump truck with a concrete bucket. Concrete buckets designed for cranes or forklifts allow the concrete bucket to be lifted into place, and a lever is used to open the mouth of the bucket so the concrete flows into the forms. Some have bottom discharge “doors” that open like a clam, others have side discharge chutes so the concrete can be dropped into forms that the bucket cannot be position over.