Precast panels, Fire, Thermo-mechanical modelling, Design criteria
Session
Civil Engineering, Infrastructure and Environment
Description
This study examines the thermal performance of concrete incorporating bio-based aggregates modified with polymers and phase change materials (PCM). Four mixes were tested: conventional concrete, concrete with uncoated wood aggregates, with polymer-coated (XSBR) wood aggregates, and with PCM-saturated, XSBR-coated wood aggregates. Spherical specimens (72 mm) were cooled to ~7 °C and then exposed to convective heating (~40 °C), with core temperatures monitored using type K thermocouples. PCM-containing samples exhibited a clear thermal buffering effect, delaying heat transfer during phase transition. Wood aggregates also reduced thermal conductivity compared to conventional aggregates, further slowing heat propagation. A Finite Element Method (FEM) model was developed to simulate heat transfer. While the model accurately reproduced the reference concrete behaviour, discrepancies increased with material complexity due to bio-aggregates, coatings, and PCMs. The simplified approach could not fully capture latent heat dynamics, underscoring the need for advanced modelling techniques for heterogeneous composites with phase change functionality.
Keywords:
Thermal conductivity, Phase change materials (PCM), Bio-based aggregates, Heat transfer modeling
Proceedings Editor
Edmond Hajrizi
ISBN
978-9951-982-41-2
Location
UBT Kampus, Lipjan
Start Date
25-10-2025 9:00 AM
End Date
26-10-2025 6:00 PM
DOI
10.33107/ubt-ic.2025.51
Recommended Citation
Ferreira, Saulo Rocha; Andrade, Rodolfo Giacomim Mendes de; Kuhn, Leonardo Seibert; Peralta, Ignacio; Cureau, Roberta Jacoby; Pisello, Anna Laura; and Caggiano, Antonio, "Precast panels, Fire, Thermo-mechanical modelling, Design criteria" (2025). UBT International Conference. 13.
https://knowledgecenter.ubt-uni.net/conference/2025UBTIC/CEIE/13
Precast panels, Fire, Thermo-mechanical modelling, Design criteria
UBT Kampus, Lipjan
This study examines the thermal performance of concrete incorporating bio-based aggregates modified with polymers and phase change materials (PCM). Four mixes were tested: conventional concrete, concrete with uncoated wood aggregates, with polymer-coated (XSBR) wood aggregates, and with PCM-saturated, XSBR-coated wood aggregates. Spherical specimens (72 mm) were cooled to ~7 °C and then exposed to convective heating (~40 °C), with core temperatures monitored using type K thermocouples. PCM-containing samples exhibited a clear thermal buffering effect, delaying heat transfer during phase transition. Wood aggregates also reduced thermal conductivity compared to conventional aggregates, further slowing heat propagation. A Finite Element Method (FEM) model was developed to simulate heat transfer. While the model accurately reproduced the reference concrete behaviour, discrepancies increased with material complexity due to bio-aggregates, coatings, and PCMs. The simplified approach could not fully capture latent heat dynamics, underscoring the need for advanced modelling techniques for heterogeneous composites with phase change functionality.