In the heart of Bangkok, a groundbreaking study is reshaping how we think about concrete waste and recycling. Mayowa Emmanuel Bamisaye, a researcher at King Prajadhipok’s Institute, has developed a hybrid mathematical model that could significantly impact the construction and energy sectors. Published in the journal *Sustainable Futures* (translated as “Future Sustainability”), this research integrates System Dynamics (SD) modelling with the Random Forest (RF) algorithm to evaluate the environmental impacts of recycling concrete waste from building demolition.
The study addresses critical sustainability challenges by validating the SD model’s predictions with the RF algorithm, identifying influential parameters, and enhancing predictive reliability. “This integrated approach allows us to not only predict outcomes but also understand the key factors driving them,” Bamisaye explains. The model achieved impressive predictive accuracy, with R-squared values ranging from 0.9818 to 0.9952 and NMSE scores between 0.0048 and 0.0182 for key metrics like Total Landfill Consumption (TLC), Total Material Conservation (TMC), Total Primary Energy consumption (TPE), and Total CO₂-equivalent emissions (TCO2-eq).
The findings reveal a dual benefit: recycling concrete waste conserves raw materials and reduces landfill reliance. Expanding recycling plant capacity can significantly boost recycled aggregate production and cut landfill demand. Strategically locating these facilities near demolition sites minimizes transportation needs, supporting long-term waste reduction goals. “By scaling recycling infrastructure, we can accommodate the increasing construction and demolition waste while reducing environmental impacts,” Bamisaye notes.
This research offers actionable insights for sustainable policy development and advances our understanding of the environmental impacts of concrete waste recycling. For the energy sector, the implications are substantial. Reduced landfill reliance means lower methane emissions, a potent greenhouse gas. Additionally, conserving raw materials translates to energy savings in material extraction and processing.
The study’s integrated framework provides a robust tool for policymakers and industry leaders to make informed decisions. As the construction industry grapples with sustainability challenges, this research offers a beacon of hope. By embracing these findings, the industry can move towards a more sustainable future, reducing environmental impacts while meeting the demands of urbanization.
In the words of Bamisaye, “This is not just about recycling; it’s about reimagining our approach to construction and demolition waste.” The study’s insights could shape future developments in waste management, recycling technologies, and sustainable construction practices, paving the way for a greener, more efficient industry.