While in Madison, WI we stopped at this construction site to watch this concrete processing operation. This process includes the crushing and screening of large lumps of aggregate material in the construction and demolition (C&D) debris stream into smaller sizes suitable for construction use or further downstream processing.

I learned that construction and demolition (C&D) recycling is the process of recovering valuable resources from an array of inert construction waste, such as broken concrete, asphalt, soil, brick, metals, sand and stone that would otherwise be sent to the landfill. http://www.mclanahan.com

After this dry process, the wet processing part of the C&D recycling operation can include washing and scrubbing away deleterious material from the sound aggregate. It can also include classifying and dewatering the sand fraction. To add to the sustainability of the wet process, the resulting waste stream can include liquid-solid separation equipment for recycling reusable process water and getting the solids fraction to a drip-free, easy-to-manage state. http://www.mclanahan.com