A mobile asphalt mixing plant is a plant for producing hot-mix asphalt directly at or near a project site. It mixes aggregate, bitumen, and filler in a controlled manner so road crews can lay down highways, city streets, or small access roads without depending on remote, stationary plants.
As opposed to a stationary asphalt plant, a mobile unit is constructed on one chassis or a few small modular frames that can be transported by towing or lifting. This trims setup time, minimizes permanent foundations and makes it simpler to cater to multiple mid-size projects back-to-back instead of one long-term jobsite. The process steps remain nearly identical to a fixed plant. Aggregate feeding, drying, mixing and blending occur, however, the layout is compacted and engineered for rapid installation and teardown.
Mobile asphalt mixing plants are commonly classified by their mobility and mixing type. From a mobility perspective, they can be classified by migration traits, like fully single-chassis plants that migrate as one unit or modular container-style systems that break down into multiple skids for higher capacity projects. From a production angle, there are two main types: drum type, which is continuous, and forced type, which is batch or discontinuous. Forced mobile plants have nearly the same components and workflow as fixed asphalt plants, which include mixers, elevators, and more complex controls. Drum units emphasize simpler, continuous flow with fewer modules.
