Moghtadernejad, Nima
(2014)
Performance Of Fire-Damaged Reinforced Concrete Rectangular Columns Retrofitted With Fiber Reinforced Polymer Composites.
Masters thesis, Perpustakaan Hamzah Sendut.
Abstract
In this experimental study, a total of twenty-one rectangular RC columns have been
prepared and tested under axial compression test in three groups: un-heated, heated,
heated-and-repaired with FRP. The objectives of the study were firstly to study the
effect of fire temperature at 500°C and 600°C on the compressive strength and secant
axial stiffness; and secondly to study the effect of repairing with GFRP and CFRP
including the number of layers on improvement in compressive strength and axial
stiffness, of RC columns. The RC columns were exposed to fire with the method of
steady-state test under temperatures of 500°C and 600°C. The heated RC columns
were repaired with unidirectional CFRP and GFRP jackets in one and two layers for
the purpose of investigating the improvement in the compressive strength and the
secant axial stiffness of the rectangular RC columns. The experimental results show
that the residual compressive strength of RC columns were 43.1 % and 34% of the
compressive strength of un-heated RC columns after being exposed to temperatures
of 500°C and 600°C, respectively.
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