Shear Behavior of Prestressed Steel-Fiber-Reinforced Concrete Hollow-Core Slabs

PCI Journal | July–August 2017 Precast, prestressed concrete hollow-core slabs are used in residential and office construction due to their light weight, economy, and rapid deployment. These structural members are typically manufactured through either an extrusion or a slip-form process. A nearly zero-slump concrete is used in extruded hollowcore slabs, while a slightly more workable concrete is used during a slip-form manufacturing process. In either case, however, the use of traditional shear reinforcement is not feasible, which limits the design shear strength of the member to that assumed to be provided by the concrete.