Akademik Veri Yönetim Sistemi
INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS, cilt.20, ss.1-21, 2026 (SCI-Expanded, Scopus)
The construction
industry faces significant challenges in managing construction and demolition
waste (C&D) and reducing its carbon footprint. A systematic literature
review was conducted to address these issues by exploring the accelerated
carbonation of recycled concrete aggregates (RCAs) across 124 studies. This
review focuses on enhancing RCA properties while capturing CO₂ and examines the
impacts on recycled aggregate concrete (RAC) properties, including mechanical
strength, durability, and sustainability. Studies were selected on the basis of
peer-reviewed status, relevance to RCA carbonation, and availability in
English. Independent screening and assessment minimized bias, and the results
were synthesized narratively to highlight trends and comparisons. This review
investigates four carbonation methods- standard, pressurized, flow-through, and
wet carbonation- and assesses the impact of critical parameters such as
relative humidity, temperature, CO₂ concentration, and carbonation duration on
efficiency. The optimal conditions were identified as 50–70% relative humidity,
20–30°C temperature, and 20–50% CO₂ concentration, increasing the carbonation
depth and effectiveness. These findings indicate that carbonation significantly
improves the mechanical properties and durability of RCAs and enhances the
quality of RAC in terms of strength, water absorption, and density, with
smaller RCA particles especially benefiting from their larger reactive surface
area.