EFFECT OF SHEAR CONNECTORS AND INTERFACE ROUGHNESS ON THE BEHAVIOR OF TWO WAY COMPOSITE PRE-SLABS
MAHMOUD HISHAM HASSAN EL-MELIGY;
Abstract
Summary:
Pre-slabs are one of the most commonly used concrete elements especially in
construction of buildings, skyscraper and bridges, the pre-cast concrete layer is used as
form or shuttering for the cast in place concrete layer. In addition, this cast-in-place
layer is widely used for strengthening an existing slab and repair applications, one of
the main problems when using pre-slabs is the shear transfer between the two layers.
In this research, the behavior of two-way composite pre-slabs was studied and
an experimental program was carried out to test nine simply supported two way slabs,
one of them was a monolithic slab that was used as a reference and the other remaining
eight slabs were composite pre-slabs composed of two concrete layers. The composite
pre-slabs were divided into three main groups to investigate the effect of shear
connectors length and ratio, and interface roughness on the behavior of two-way
composite pre-slabs. Also a theoretical analysis was carried out to confirm the
experimental program using ANSYS Simulation software.
It was concluded from these experiments that increasing of shear connectors
length or ratio led to increase horizontal shear capacity. Also, using epoxy binding
materials and interface roughness at the contact surface between the two concrete layers
had a great effect on increasing the horizontal shear capacity of composite pre-slabs.
Pre-slabs are one of the most commonly used concrete elements especially in
construction of buildings, skyscraper and bridges, the pre-cast concrete layer is used as
form or shuttering for the cast in place concrete layer. In addition, this cast-in-place
layer is widely used for strengthening an existing slab and repair applications, one of
the main problems when using pre-slabs is the shear transfer between the two layers.
In this research, the behavior of two-way composite pre-slabs was studied and
an experimental program was carried out to test nine simply supported two way slabs,
one of them was a monolithic slab that was used as a reference and the other remaining
eight slabs were composite pre-slabs composed of two concrete layers. The composite
pre-slabs were divided into three main groups to investigate the effect of shear
connectors length and ratio, and interface roughness on the behavior of two-way
composite pre-slabs. Also a theoretical analysis was carried out to confirm the
experimental program using ANSYS Simulation software.
It was concluded from these experiments that increasing of shear connectors
length or ratio led to increase horizontal shear capacity. Also, using epoxy binding
materials and interface roughness at the contact surface between the two concrete layers
had a great effect on increasing the horizontal shear capacity of composite pre-slabs.
Other data
| Title | EFFECT OF SHEAR CONNECTORS AND INTERFACE ROUGHNESS ON THE BEHAVIOR OF TWO WAY COMPOSITE PRE-SLABS | Authors | MAHMOUD HISHAM HASSAN EL-MELIGY | Issue Date | 2018 |
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