Design trade-offs in 3D-printed parametric facade panels with CDW-based geopolymer: Integrated thermal and acoustic performance assessment
Journal of Building Engineering, cilt.130, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 130
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.jobe.2026.116992
- Dergi Adı: Journal of Building Engineering
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
- Anahtar Kelimeler: 3DCP, Geopolymer binder systems, Parametric facade panel, Recyclable CDW, Thermal and acoustic performance
- Gazi Üniversitesi Adresli: Evet
Özet
This study aimed to produce 3D-printed parametric facade panels using recyclable CDW and focused on thermal and acoustic performance through simulation-experimental analyses. In the literature, there are a limited number of studies focusing on the production of facade panels using 3D Concrete Printing (3DCP) with CDW, which include both simulation and experimental tests, as well as thermal-acoustic analyses. In this context, sustainable CDW-based geopolymer composites have been obtained within an integrated computational-experimental framework using 3DCP technology. Panel thickness, internal filling geometry, void ratio, and surface morphology were considered as fundamental design variables; twelve parametric design models with dimensions of 50 × 5-7.5-10 × 50 (width × thickness × height) cm and six physical prototype panels with dimensions of 30 × 7.5 × 30 cm were developed. In thermal performance analyses, steady-state heat transfer simulations were performed, and thermal conductivity was measured with a heat flow meter device. Acoustic performance was evaluated by integrating material-based sound absorption coefficients obtained from impedance tube experiments into a BIM/Dynamo-based parametric acoustic modeling algorithm. According to the analyses, experimental U-values were found to be between 5.5% and 12.69% higher compared to numerical models. Among 3DCP facade panels, Experimental Model-3 (EM-3) demonstrated the best performance with a value of 1.493 W/m2K. EM-3 provided 5.57% to 11.24% better thermal insulation compared to other designs. The EM-4 panel, which has the most pronounced surface waviness, reflects the largest calculated equivalent absorption area (1.242 m2). EM-4 offers advantages ranging from 3.14% to 6.7% compared to other designs.