Recycling of Ceramic Tile Waste in the Formulation of Self-Compacting Concrete

Abstract

Aggregates represent 75% of concrete volume; however, the exhaustion of natural aggregate deposits and the difficulties in opening new quarries require a new sources and studying the possibility of substituting natural aggregates with waste. This study investigates the potential use of recycled ceramic tile waste as a substitute for natural coarse aggregates in self-compacting concrete (SCC). Several SCC mixtures were formulated with varying replacement levels of natural aggregates by ceramic tiles waste aggregates CTW (25%, 50%, 75%, and 100%). The fresh properties were evaluated using slump flow, sieve stability, and L-box tests, while the hardened properties were assessed through Ultrasonic Pulse Velocity, compressive and flexural strength tests. The results demonstrate the technical feasibility of incorporating ceramic tile waste as recycled aggregates in SCC. Up to 75% substitution, the mixtures maintained satisfactory fresh and mechanical performance. This research provides valuable experimental data supporting the valorization of ceramic tile waste in sustainable concrete production, contributing to environmental conservation and resource.