Self-compacting
concrete is a high-performance concrete type with a high flowability that can
fill formwork without any mechanical vibration because the modification in the
mix design of self-compacting concrete. This can have a significant influence
on the material’s mechanical properties and therefore, it is important to
investigate whether all of the assumptions about conventional concrete design. The
structures are also valid for self-compacting concrete construction that bond
behaviour between concrete and reinforcement is a primary factor in the design
of reinforced concrete structures that presents a strength model and bond-slip
relationship. Based on the experimental results from recent investigations of self-compacting
concrete and conventional concrete and the proposed model code provision. The
empirical equations and experimental results from the bond strength of self-compacting
concrete and conventional concrete are compared on parameters bond strength. The
steel bar diameter for concrete compressive strength type curing age of the
concrete and height of the embedded bar along the formwork for reinforcing
steel which are tested and must comply with the requirements of test to ensure
that they retain the strength.
The interfacial
bonding behavior of textile reinforced concrete confined concrete and corroded steel bar was studied by central pull-out testing using the type of specimen not
strengthened and the strengthened before and after corrosion. The result that
without the textile reinforced concrete constraint is the ultimate bond
strength between the concrete and corroded reinforcement steel decreases. With the
increasing corrosion ratio after the concrete cracks due to reinforcement
corrosion at which point the ultimate bond strength rapidly decreases. However,
the ultimate bond strength of the specimens strengthened after corrosion can be
more times greater than the strength of the specimens not strengthened when the
concrete cracks due to reinforcement corrosion. For the specimens strengthened
before corrosion, the textile reinforced concrete strengthening layer
effectively limits the decrease in the ultimate bond. The strength between the
corroded steel bar and concrete resulting in specimen with a high interfacial
bond strength at high corrosion ratios thus, compared to the other types of
specimens. This case comparatively yielded the best results for all the types
of specimen according to the experimental data calculation model of the ultimate
bond strength was established considering changes in the corrosion ratio.
A nonlinear finite
element model is proposed to predict the bond behavior between concrete and
near-surface mounted fiber-reinforced polymer model is validated based on the
results from an experimental program. It carried out by the present authors
before being employed to generate a wide range of data considering key
parameters such as grooves spacing and embedment length and fiber type basalt
and carbon. The near-surface mounted fiber-reinforced polymer strips as well as
concrete's strength impact the steel bar reinforcement is also evaluated
findings to demonstrate a significant impact. The near-surface mounted
fiber-reinforced polymer strips' type embedment length and groove spacing on
bond behavior with the higher-strength grade. Concrete imparted noticeable
improvements in bond characteristics whereas the presence of steel bar
reinforcement seems to enhance the pull-out force. It slightly reduced to bond
ductility for the nonlinear. The finite element cracking patterns are used to
help understand the influence of different parameters on bond failure mode
between the near-surface mounted fiber-reinforced polymer strips concrete.
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