الفهرس 
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Abstract
Corrosion of steel reinforcement has been resulted in tremendous maintenance costs especially in bridges. In the last
decade’s engineers, researchers and authorities have been looking
for possible improvements to reduce or even eliminate corrosion of
embedded reinforcement in concrete structures. One of the viable
solutions has been the use of FRP-reinforced and prestressed
concrete in construction industry instead of metallic reinforcement
(steel) concrete, however, as a new material; their properties and
behavior have not been fully explored (Adorjan Borosnyol 2002 )
[1]. The purpose of this study is to asses analytically the effects of a
three main design structural parameters on the flexural response of
prestressed concrete bridges with FRP Tendons.
The analytical investigation consisted of using a commercial
finite element analysis package (ANSYS, 2013) [36] to predict
deflections, strains, and stresses of FRP-prestressed concrete beams
subjected to monotonically increasing load up to failure . Firstly
four verification models using (ANSYS, 2013) [36] was set up and
compared versus experimental data given in literature [26,31].
Secondly a parametric study was conducted to examine the effect
of prestressing reinforcement ratio, concrete compressive strength
and the level of initial prestressing forces on the overall flexural