A concrete pump is a machine which is used for transferring liquid concrete by pumping. One type of pump is attached to a truck and is known as a boom concrete pump because it uses a remote-controlled robotic arm which is the boom. This allows the concrete to be placed accurately. These types are more popular on larger construction projects.
A concrete batching plant is a system which combines ingredients to form concrete. These could be things such as sand, water, aggregate, cement and potash.
A concrete mixer is a device that continuously combines aggregate such as sand or gravel, and water to form concrete. A concrete mixer has a drum which is where the concrete is rotated around.