EXPERIMENTAL INVESTIGATION ON THE UTILIZATION OF MANUFACTURED ALKALI-ACTIVATED COARSE AGGREGATE IN RAILWAY SLEEPERS

The depletion of natural resources due to high consumption rates, coupled with the accumulation of industrial waste, poses significant environmental challenges. This study explores the potential of manufacturing Alkali Activated Coarse Aggregate (AACA) using an ordinary concrete mixer, aiming to utilize industrial waste efficiently. AACA was produced with molarities of 6, 8, 10, and 12, and its physical properties were analyzed. Results revealed that AACA's physical characteristics are comparable to conventional aggregates, with differences noted in flakiness, elongation, and angularity number. Given the crucial role of sleepers in rail track performance, this study further investigated the application of AACA in concrete for sleeper production. It was found that using 10M AACA to replace up to 75% of natural aggregate is feasible for sleeper manufacturing. However, higher molarities and replacement percentages did not meet the standards set by the Research Design and Standards Organization (RDSO). This research underscores the viability of AACA as a sustainable alternative in railway sleeper production, contributing to waste management and resource conservation.