Abstract
This research work is devoted to understanding the behaviour of calcium and silica-rich char in recycled aggregate concrete composites. Although, the determination of absolute contribution by each type is one of the strenuous tasks to accomplish, however, the overall perspective in this area is presented for their mechanical and durability performance. Calcium rich engineered wood char produced higher strength performance than silica rich char. The long-term curing behaviour up to 56 days revealed that mechanical performance is slightly varied in contrast to 28 days. Similar behaviour was seen in flexural strength, water absorption and voids in which slight change was observed than control samples. Further in-depth research is required to determine the potential of engineered char in recycled aggregate concrete composites.