Below is a list of Concrete Crusher manufacturers from Iowa. Concrete crushers are a type of pulverization equipment used in the crushing, or breaking into very fine particles, of concrete into concrete aggregate. Since concrete, made up of broken stone or gravel and sand, is a very dense, hard material, a heavy-duty pulverizer is required. Designed to reduce large waste materials for easier disposal or recycling, crushers are well-suited to concrete pulverization because they compress hard materials such as ore and asphalt.