Why We Should Recycle Concrete

Along with efficiently using energy resources, it is also important to efficiently use and recycle raw materials whenever possible.  As concrete is the most widely used man-made material in the world, it is essential that we responsibly produce, use and recycle it. 

The benefits of recycling concrete are numerous.  Using recycled building materials reduces the amount of new raw materials that must be extracted, transported and processed.   Another huge benefit of recycling concrete from demolished buildings and highways is it reduces the amount of material that would otherwise go into a landfill. 

In the recycling process, once a building is demolished, crews start preparing the concrete by removing as many contaminates as possible including roofing, trash, wood, and other miscellaneous materials.  The quality of care that is taken at the job site can improve the outcome of the recycled material.  In fact, many recycling facilities will not accept concrete that is not reasonably clean.    

The recycling process involves crushing, pre-sizing, sorting, screening and eliminating contaminants.  It is then cleaned with water to remove dirt and any other remaining materials.  It is especially important to remove materials such as asphalt, sealant, chlorides and gypsum.  

Also of value is the reinforced steel (rebar) that is embedded in the concrete.  It is removed at the recycling site using huge magnets that attract and identify the steel.  After removal, the rebar is sent to facilities that specialize in steel materials. 

Recycled concrete is used as aggregate in new concrete as well as for fill, drainage, or as sub-base gravel before asphalt or concrete is poured. The Portland Cement Association says, “The Federal Highway Administration (FHWA) reports that eleven states use recycled concrete aggregate in new concrete. These states report that concrete with recycled aggregate performs equal to concrete with natural aggregates.”

The Conco Companies are a leading supplier of concrete services for the Western U.S. and got our start in the Bay Area in 1959 by offering clients the best value on a wide range of concrete services and products.  Since that time, we have taken a leading role as one of the top concrete contractors in the region. We currently serve California, Washington, Oregon, Nevada and Colorado.

Source:concretethinker.com/solutions/Recycled-Content.aspx