Static fire capacity assessment of bubble deck slabs incorporating plastic balls

The bubble deck slab system reduces self-weight of slab without reducing strength. In this study, singly reinforced bubble deck concrete slabs were created by incorporating hollow plastic spheres to form voids beneath the neutral axis. The bubble deck slabs, with varying plastic ball percentages (0%, 10%, 20%, 30%, and 40%), were subjected to fire exposure at temperatures of 250°C, 500°C, and 750°C for durations of 1 and 2 hours. Their load-bearing capacity was then evaluated under single-point flexure. The slabs were tested to simulate real-world fire scenarios and assess how heat affects structural integrity. The performance comparison under static loading conditions, with and without fire exposure, helps evaluate how varying void percentages in bubble deck slabs affect their structural behavior and resilience under different conditions. This study also explored the load-deflection behavior, as well as the impact of different temperature levels and exposure durations on the slabs' overall performance, offering a comprehensive evaluation of their durability and load-bearing capacity under fire conditions.