O’Reilly Concrete Hollowcore floor units have a high resistance to both airborne noises and impact sounds. Because our cores are made using polystyrene formers, our units are also the perfect acoustic barrier between floors such as in apartment buildings.
BETTER THERMAL PROPERTIES
O’Reilly pre-stressed Hollowcore floor units have better thermal properties than slabs with open hollow voids due to completely closed cores filled with polystyrene. The air movement in traditional hollowcore slabs reduces their thermal performance. The thermal performance of standard O’Reilly Hollowcore floor slabs is 25% better in average com- paring to the same slabs with open voids.
THERMAL MASS EFFECT
Thermal mass is a property that enables precast concrete floors to absorb, store, and later release significant amounts of heat. Buildings constructed of concrete and masonry have a unique energy-saving advantage because of their inherent thermal mass.
Below is a comparison of U-value between our standard Hollowcore slabs and the same slabs with open voids; lover U-value means better thermal insulation:
|for O’Reilly standard Hollowcore slab
||for the same slab with open voids
|150 mm Hollowcore
|200 mm Hollowcore
|250 mm Hollowcore
|300 mm Hollowcore
The thermal performance of standard O’Reilly Hollowcore floor slabs is 25% better in average comparing to the same slabs with open voids