Year: 2025
Type: article
Abstract: This study examines the fire behaviour of composite slabs made with lightweight concrete, following the fire insulation criteria "I" outlined in Eurocode 4 (CEN 2005). The parametric analysis includes the effect of the airgap, moisture content, thermal properties of the lightweight concrete, and geometrical aspects. Fire resistance time is calculated using two methods - the analytical method from Appendix D of Eurocode 4 (CEN 2005) and a numerical method (ANSYS n.d.). Finite element analysis shows that the moisture content of lightweight concrete significantly impacts fire resistance time. When the moisture content exceeds 3%, the Eurocode method predicts a lower fire resistance time compared to the simulation method. The prediction models indicate that, to achieve the same fire resistance time, a normal-weight concrete section must be 7% thicker than a lightweight concrete section.
Authors: A Lakhal, A Bougara, N Benlakehal
Institution: Hassiba Benbouali University of Chlef
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4410130309