Evaluation of structural and thermal performance of polystyrene integrated cross laminated timber panels
SCIENTIFIC REPORTS, cilt.16, ss.1-16, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 16
- Basım Tarihi: 2026
- Doi Numarası: 10.1038/s41598-026-41173-3
- Dergi Adı: SCIENTIFIC REPORTS
- Derginin Tarandığı İndeksler: Scopus, Science Citation Index Expanded (SCI-EXPANDED), BIOSIS, Chemical Abstracts Core, MEDLINE, Directory of Open Access Journals
- Sayfa Sayıları: ss.1-16
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
This study aims to evaluate the structural and thermal performance of Polystyrene-Integrated CLT (P-CLT) panels, a hybrid system formed by integrating expanded (EPS) and extruded (XPS) polystyrene foam into the middle layer of cross-laminated timber (CLT) panels. Six P-CLT and CLT panels (54 × 1200 × 2400 mm) were tested for lateral load performance, and nine specimens (54 × 300 × 300 mm) were used for thermal conductivity measurements. P-CLT panels increased thermal insulation performance while maintaining load-bearing capacity, reducing thermal conductivity by 16.1% (EPS) and 19.9% (XPS). In lateral load tests, CLT panels reached 72.02 kN, while EPS- and XPS-integrated panels were 36% and 7% lower, respectively. Both hybrid panel types showed 47–50% higher displacement, indicating more ductile behavior. Stiffness was highest for CLT panels (3.44 kN/mm), while EPS and XPS panels measured 1.35 and 1.09 kN/mm, consistent with previous studies. Energy simulations showed that P-CLT panels, particularly with XPS, reduced heating energy demand by 9–12%, while uninsulated CLT systems increased demand by up to 46%. The P-CLT system provides a cost-effective sustainable solution for construction and renovation, representing one of the first experimental and simulation-based assessments of combined structural and thermal performance in hybrid CLT panels.