Small pieces of concrete are used as gravel to be laid down as the lowest layer in a road
, while the larger pieces can be used for erosion control. There are various advantages of using leftover concrete not only in the terms of economics, but also for the environment. Recycling concrete in the landfill is better alternative to dumping as it saves landfill space by keeping debris out; minimizes the need for gravel mining and helps in reducing the pollution caused by towing the fresh concrete in the trucks.