Increased urbanisation has led to higher infrastructure requirements. Utilising OPC-based conventional concretes to satisfy this escalating demand has catastrophic environmental consequences, including carbon dioxide (CO2) emissions resulting from the cement manufacturing process and the depletion of natural resources used to obtain aggregates. The agricultural waste ash (AWA)-based alkali-activated concrete is a promising eco-friendly construction material as it is developed from the wastes recovered from various sectors like agricultural fields and iron industry. The present study investigates the influence of sugarcane bagasse ash (SBA) content on the mechanical performance of eco-friendly alkali-activated slag concrete incorporated with recycled coarse aggregates (RCA). Four different SBA-based alkali-activated slag concretes were developed by gradually replacing SBA content from 5% to 20% with ground granulated blast furnace slag (GGBS). NDT tests such as rebound hammer test, ultrasonic pulse velocity (UPV) test and compressive strength parameters are used to evaluate the influence of SBA content in alkali-activated concrete with RCA. As an optimal replacement percentage of GGBS, 10% SBA was observed to exhibit the maximum strength.