Akademik Veri Yönetim Sistemi
8th International Mediterranean Scientific Research Congress, Antalya, Türkiye, 13 - 15 Ağustos 2025, cilt.1, ss.520-525, (Tam Metin Bildiri)
Mitigating thermal transmittance through masonry walls is a major step toward improving building energy efficiency. This study proposes an innovative bio-based retrofitting solution in which finely ground hazelnut shells, an abundant agricultural by-product in Türkiye, are incorporated into thermal insulation plaster. The plaster, containing 4% hazelnut shell powder, is symmetrically applied to both sides of traditional briquettes, and its thermal performance is experimentally investigated using a controlled laboratory-scale coheating test. Results indicate a marked improvement over the uninsulated briquette (5.5 W/m2K), with the modified plaster achieving a U-value of 2.14 W/m2K, corresponding to a 61.1% enhancement in thermal resistance. The coated samples also exhibit improved thermal inertia, maintaining indoor comfort for extended periods by slowing heat dissipation. High test repeatability is confirmed, with daily U-value variations remaining below 2%. The findings demonstrate that hazelnut shell-modified plaster is a cost-effective and scalable material for sustainable building retrofits, offering practical applications in affordable housing and refurbishment projects. This work supports circular economy practices and provides policymakers with evidence-based insight into integrating agricultural waste into energy-efficient construction solutions.