Asphalt plants are used to manufacture asphalt and other forms of coated stone for roads. Creating asphalt concrete requires a variety of ingredients such as aggregate, sand and stone dust. Measured correctly they are heated and coated with a bitumen based product. Recycled asphalt pavement (RAP) can be used as part of the mix, particularly if roads are being rehabilitated and old road surface removed. You can read more about recycled asphalt and removing old asphalt roads in our article about Soil Stabilization.
The temperature of the asphalt once manufactured must remain at 100-200 degrees in order for it to be workable, this is to avoid it from setting. Commonly asphalt is stored in large heated and insulated silos.
Mobile asphalt plants allow companies to relocate it from site to site letting workers have ready access. They are for road infrastructures and highways that are being constructed and can be moved from job to job.
Static asphalt plants use heated hoppers to store the product ready for distribution. They are permanent fixtures and have a higher output of produce.
Below are two examples of Asphalt Plants.
Marini 80ton Plant
This static Marini asphalt plant is capable of 80tph and M60E 140K.
It has 5 aggregate hoppers, a weighing hopper, a dryer, bag filler, storage silo, 2 x bitumen tanks, fuel tank, 2 x hot storage tanks and 2 x generators.
Roadstar RS 1500 Plant
This mobile Roadstar asphalt plant has a larger output of 120/140 tph.
This three chassis design offers a high degree of mobility and allows it to be relocated quickly and easily with minimal site preparation. With multi hopper, road mobile cold feed unit with built in collecting conveyor. Drive geared motor units and variable speed control.