Concrete plants are facilities where concrete is produced for construction projects. They mix various ingredients, including cement, water, sand, and gravel, to create concrete in different grades and specifications. These plants can be stationary or mobile, allowing them to serve various locations as needed. The production process involves batching, mixing, and sometimes storing the concrete before it is delivered to construction sites. Ready-mix concrete is a common product from these plants, as it is pre-mixed and transported in a truck to ensure it remains workable until it reaches its destination.