This paper presents the structural behaviour of precast lightweight foam concrete sandwich panel (PFLP) under flexure, studied\nexperimentally and theoretically. Four (4) full scale specimens with a double shear steel connector of 6mm diameter and steel\nreinforcement of 9mm diameter were cast and tested. The panel�s structural behavior was studied in the context of its ultimate\nflexure load, crack pattern, load-deflection profile, and efficiency of shear connectors. Results showed that the ultimate flexure\nload obtained from the experiment is influenced by the panel�s compressive strength and thickness. The crack pattern recorded in\neach panel showed the emergence of initial cracks at the midspan which later spread toward the left and right zones of the slab.\nThe theoretical ultimate load for fully composite and noncomposite panels was obtained from the classical equations. All panel\nspecimens were found to behave in a partially composite manner. Panels PLFP-3 and PLFP-4 with higher compressive strength and\ntotal thickness managed to obtain a higher degree of compositeness which is 30 and 32.6 percent, respectively.
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