Crushed concrete contains coarse aggregate and sand consistent with the concrete at time of production. Aggregate durability properties remain consistent with that of the original source, and the total aggregate content is typically in the range of 60-75%.
Hardened cementitious paste and sand, or the “concrete mortar” may remain bound to aggregate, or contribute to the fines fraction of fully graded crushed concrete when used as a base material.
Apart from using recycled concrete as an aggregate base, it can also be utilized to create 2” to 4” recycled stone, which can be used for site stabilization, bottom layer road base, and backfill.
Besides stone, recycled concrete can also be used to create engineered fill sand.
Concrete waste takes up a significant portion of landfills and may not accommodate the size and volume, and is also extremely hazardous for the environment. Recycling concrete keeps these materials out of landfills and allows them to be repurposed across a spectrum of applications.