TITLE:
Review of Bending (Static & Dynamic) Behavior of Multilayer/Sandwich Concrete Slabs with Interlayer Connections
AUTHORS:
Abdelrahman Ali, Erjun Wu, Omer Abdelaziz
KEYWORDS:
Review Report, Bending, Multilayer, Concrete, Connections
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.15 No.4,
October
24,
2025
ABSTRACT: Slab bending behavior is researched through investigation of the effects of various parameters such as longitudinal ribs volume ratios of concrete, number of support edges, and end connections. The connection between interlayers is very important to render bending performance due to the fact that material-based bonds (e.g., roughened interfaces, adhesive) and mechanical connectors (e.g., dowels, steel bars, shear keys) significantly influence the amount of composite action between interlayers. Complete composite action yields greater stiffness and strength, while partial or non-composite action may lead to premature slip, shear failure, or loss of capacity. The current review summarizes experimental results, analytical solutions, and numerical models in the literature, summarizes current research gaps, and charts future research directions for designing more efficient and ductile slab systems.