Fire behaviour of hollow core slabs

The objective of our research was to develop an optimum concrete mix for fire resistance, that is usable for hollow core slab prefabrication. Small-scale and full-scale tests were done, and the results were used to calibrate a numerical model that can be used to determine the temperature and load capacity reduction of steel rein-forcement. With the help of the calibrated model, the effects of geometric variables were examined. The thickness of the ridge between the cavities has no effect on the change in the maximum temperature of the protected side in the examined 30-minute range, but the minimum temperature decreased.

Automated summary

The objective of this research was to develop an optimal concrete mix for fire resistance in hollow core slab prefabrication. Tests were conducted at different scales and a numerical model was calibrated using the results. The study also examined the effects of geometric variables on temperature and load capacity reduction.