In the quest for sustainable construction practices, a recent study published in the journal *Materials Proceedings* (translated from Greek as “Proceedings of Materials”) offers promising insights into the use of recycled aggregates (RAs) from construction and demolition waste (CDW). The research, led by Ioannis Bampanis from the Department of Geology and Geoenvironment at the National and Kapodistrian University of Athens, explores the potential of recycled aggregates to reduce the environmental impact of concrete production.
The construction industry has long grappled with the challenges of managing CDW, which has been growing rapidly due to urbanization and population growth. Traditional methods of disposing of this waste have significant environmental consequences, making the search for sustainable alternatives a priority. Bampanis’s study suggests that using recycled aggregates in concrete production could be a game-changer.
“Our analysis indicates that a replacement ratio of 50% recycled aggregates is optimal,” Bampanis explains. “This ratio balances the highest acceptable decrease in aggregate properties with the maximum environmental benefit, as recognized by the EN-12620 standard.”
The study found that using 50% recycled aggregates in concrete production results in a net carbon balance approximately 20% lower than using natural aggregates (NA). This reduction in CO2 footprint is a significant step towards achieving the goals of sustainable development and the circular economy.
The implications for the construction industry are substantial. By adopting recycled aggregates, companies can reduce their environmental impact while also managing CDW more effectively. This shift could lead to cost savings and improved sustainability credentials, making it an attractive option for forward-thinking firms.
Bampanis’s research also highlights the importance of further investigation into the durability and long-term performance of concrete made with recycled aggregates. “While our findings are promising, more research is needed to ensure that the use of recycled aggregates does not compromise the structural integrity of buildings,” he notes.
The study published in *Materials Proceedings* provides a compelling case for the construction industry to embrace recycled aggregates. As the sector continues to evolve, the adoption of sustainable practices will be crucial in meeting the demands of a growing population while minimizing environmental impact. Bampanis’s work offers a glimpse into a future where construction and sustainability go hand in hand, shaping the way we build for generations to come.