What device is used to completely mix concrete components at a batch plant?

The device that is primarily used to completely mix concrete components at a batch plant is the truck mixer. Truck mixers are designed to transport concrete from the batch plant to the job site while also mixing the concrete. They have a rotating drum that ensures the components are thoroughly combined throughout the transportation process, which is essential for achieving uniform consistency in the concrete when it reaches the site.

While batch mixers, stationary mixers, and portable mixers are also used in mixing concrete, they serve different purposes or contexts. A batch mixer typically mixes a fixed amount of concrete at one time and is stationary, making it less efficient for transport. Stationary mixers are designed for larger volume mixing at the plant but do not transport the concrete. Portable mixers are often used for smaller jobs and may not provide the same thorough mixing quality due to their size and design. Therefore, truck mixers are specifically designed for both mixing and transporting concrete effectively, which aligns with the requirements of batch plants.