The experimental investigations of RC internal columns in the connection zone with lightweight concrete slab

Tadeusz Urban

Department of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Łódź University of Technology (Poland)

Michał Gołdyn

Department of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Łódź University of Technology (Poland)

Łukasz Krawczyk

Department of Concrete Structures; Faculty of Civil Engineering, Architecture and Environmental Engineering; Łódź University of Technology (Poland)
https://orcid.org/0000-0002-0406-7750

Abstract

This paper presents the problem of load carrying capacity of the columns made of high-strength reinforced concrete which are separated by slab made of lightweight concrete. The experimental investigations of three models representing the internal connection between column and flat slab made of lightweight concrete of the strength tree times less than concrete strength of column are presented. The effort degree on the punching shear capacity stands for the variable parameter in the presented study. The performed study shows that there is no effect of this parameter on the effective concrete strength of the column.

Keywords:

lightweight concrete, high strength concrete, reinforced concrete slab, column, slab-column connection