Bideci, Ozlem SalliBideci, AlperAshour, AshrafKhan, Amir2026-07-012026-07-0120252073-4360https://doi.org/10.3390/polym17243248https://hdl.handle.net/20.500.12684/23218Pumice aggregate, with its highly porous structure, offers excellent lightweight and insulating characteristics; however, its excessive water absorption and weak interfacial bonding often limit its mechanical and durability performance in concrete applications. To overcome these drawbacks, this study developed a polymer-coated pumice aggregate (PCPA) concrete by applying a thin polyester layer onto the aggregate surface to enhance matrix-aggregate adhesion and reduce permeability. The mechanical, thermal, and acoustic performances of PCPA were systematically evaluated. Results revealed that polyester coating led to a notable improvement in compressive strength (up to 25%) and significantly reduced weight loss after freeze-thaw cycles. Furthermore, PCPA samples exhibited enhanced resistance to thermal degradation, maintaining structural stability even at 600 degrees C, and achieved a 40% higher sound absorption coefficient at 630 Hz compared to uncoated pumice concrete. These findings demonstrate that polyester coating effectively addresses the inherent limitations of pumice concrete, offering a promising approach for producing lightweight concretes with superior durability and multifunctional performance.en10.3390/polym17243248info:eu-repo/semantics/openAccessPolymer-Coated Pumice AggregateAcoustic PerformanceThermal PropertiesArticle1724414709232-s2.0-105026007915WOS:001646502900001Q1Q10000-0003-2385-75520000-0002-9699-6003