Punching shear of reinforced concrete slabs bonded with reactive powder
after Exposure to Fire
Abstract
Reactive powder concrete (RPC) is one of the most recent and significant
advancements in the world of building , Due to its higher concrete
characteristics, it has a common excessive benevolence happening in the
globe at the moment , excessive ductility, shrinkage resistance, and
corrosion and abrasion resistance. In this experimental investigation is
carried out on the way to revision the RPC punching shear slab activity
and the mechanical properties of this construction material to
investigate the properties of steel fiber volumetric ratio, silica fume
ratio, tensile steel ratio, reinforced concrete is the most essential
composition for construction which is a great combination to building
structures in any desired form. Present research, investigational work
of RC slab with (1000 X 1000 X 60) mm, dimensions were tested. The goal
of this study is to see how the steel fiber volumetric ratio (Vf) and
silica fume content (Sf) affect the behavior of RC slabs after being
exposed to fire. It was originate that the accumulation of 2% steel
fibers to concrete mix improved the RPC slab’s cracking and final
punching shear. The presence of reactive powder increases fire
resistance. The goal of this study’s experiments was to see how reactive
powder and Slabs’ ultimate punching shear strength was affected by
replacement ratio. when exposure to fire. After fire exposure, the
initial and subsequent stiffness of reinforced concrete slabs reduced
considerably as a temperature grew from 25 to 750 ° C.