cement mixer
From Longman Dictionary of Contemporary Englishcement mixerceˈment ˌmixer noun [countable] TCBa machine with a round drum that turns around, into which you put cement, sand, and water to make concreteExamples from the Corpuscement mixer• This has an effect rather like that of a cement mixer.• Mr Blackhurst is the retired chairman of Belle Engineering of Sheen, cement mixer and earth mover manufacturers.