الفهرس 
lNTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Corrosion of reinforcing steel in concrete is the most common cause of premature
deterioration of reinforced concrete structures. Of the many methods of corrosion
protection possible fusion-bonded epoxy coating offers one of the best
combinations of protection, ease of use, and economy. Epoxy-coated bars are
used in nearly all types of structures where concrete is exposed to a corrosive
environment. . A very important consideration in the use of epoxy-coated
reinforcing bars is the effect of the coating on the bond between reinforcing bars
and concrete.
The objective of this study is to evaluate the anchorage and bond
characteristics of fusion bonded epoxy coated reinforcement (FBECR) and the
flexural behavior of concrete beams reinforced by (FBECR) under static load. Also to describe the effect of a number of variables such as splice length
(10,15.20 CD), amount of transverse reinforcement passing the splice region (I.
2, 3 stirrups) and concrete cover (40.ISmm) on the splice strength for both
coated and uncoated bars.
14 beams with lap splices in a constant moment region were tested in
two groups each of 6 beams, a pilot beam with nonsplice, a beam with 32 ern
splice, a beam with 24 cm splice, a beam with 16 em splice and one stirrup
passing the splice region, a beam with 16 ern splice and 2 stirrups, and finally a
beam with 16 cm splice and 3 stirrups. The first group contained (FBECR) and
the second group contained identical beams reinforced by uncoated ribbed steel
bars. There is an extra beam to study the effect of the concrete cover and also
another beam to study the efficiency of on site epoxy painted steel bars.
A theoretical study was performed using a finite element analysis
program to construct a mathematical model of the tested beams and study the
theoretical effect of the experimentally studied variables on these models taking
into account the material non-linearity and hence compare the result with the
results obtained experimentally.
Based on the test results of this study and other tests previously
performed on epoxy coated bar splices in the literature, a comprehensive review
of the effect of epoxy coating on the bond characteristics, and also the effect of
the splice length, transverse reinforcement, and the concrete cover on the splice
length for coated and uncoated bars was performed design recommendations
were made, and a proposed provision was proposed for the NEW EGYPTIAN
CODE concerning the anchorage and splice length and the epoxy coated bars.