Recycled concrete aggregate (RCA) Recycled concrete aggregate (RCA) is crushed concrete recovered from demolished structures and processed for reuse in construction. It is commonly used as base material beneath pavement.
Recycling concrete reduces the demand for newly quarried aggregate while diverting demolition material from landfills. When properly processed, RCA provides stable support beneath sidewalks, driveways, and roadways. Its suitability depends on project specifications and quality control requirements for the intended application.
Frequently Asked Questions About Recycled concrete aggregate (RCA)
What is recycled concrete aggregate?
Crushed concrete recovered from demolished structures and processed for reuse, most commonly as base material beneath pavement.
What are the benefits?
It reduces demand for newly quarried stone, diverts demolition debris from landfill, and can lower material cost and hauling.
Does RCA perform as well as virgin stone?
When properly processed and graded it provides stable base support. Suitability depends on project specifications and quality control.
Can RCA be used in the concrete mix itself?
Sometimes, but structural use is more restricted than base use and requires specific approval in the mix design.