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Flexural Behaviour of Prefabricated Ultra-Shallow Composite (PUSS®) Slabs with Horizontally Oriented Shear Connectors

Alali, A. & Tsavdaridis, K. ORCID: 0000-0001-8349-3979 (2023). Flexural Behaviour of Prefabricated Ultra-Shallow Composite (PUSS®) Slabs with Horizontally Oriented Shear Connectors. Paper presented at the The 10th Hellenic National Conference of Steel Structures, 19-21 Oct 2023, Athens, Greece.


This paper presents the experimental results of flexural tests on a recently developed steel-concrete composite flooring system. The flooring system is composed from prefabricated ultra-shallow slab units (aka PUSS) that consist of T-ribbed concrete floors partially encased within and connected to two C-channel steel edge beams with novel horizontally oriented shear connections. The results of two static four-point bending tests are presented in this experimental study. This study investigates the effects of replacing normal weight concrete with lightweight concrete on the flexural behaviour of PUSS and performance of the shear connections under bending. The two 4m span test specimens are constructed using two types of concrete, which are reinforced normal weight concrete (NWC) and reinforced lightweight aggregates concrete (LWC). Both specimens implement the unique shear connection system composed of horizontally oriented steel dowels with horizontally oriented web-welded shears studs (dowels with WWSS). The failure mechanism of the slabs and the contribution of the concrete type and the shear connection system to the flexural behaviour of PUSS units are examined. The study concludes that replacing NWC with LWC with similar strength does not affect the flexural behaviour of PUSS in terms of slabs capacity, ductility and failure mechanism. However, LWC provides lower initial stiffness and results in larger size of cracks with increasing loads in comparison to NWC.

Publication Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
T Technology > TJ Mechanical engineering and machinery
Departments: School of Science & Technology
School of Science & Technology > Engineering
SWORD Depositor:
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