الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
Many existing buildings which were designed and
constructed according to old standards are inadequate to
withstand major earthquakes. A major part identified as
possessing major hazards are non-ductile reinforced concrete
frames. Accordingly, significant researches have been
devoted to develop different techniques to enhance the
seismic resistance of these column joints (e.g. Traditional
R.C. jackets, rectangular steel jackets, etc…).
In this experimental work, an investigation the use of
new materials technology (Slurry Infiltrated Fiber Reinforced
Concrete SIFCON) for seismic retrofit of non-ductile
concrete frame column joint to resist loads under simulated
seismic loads.
Large scale column joints have been tested to examine
the effectiveness of various types of jacketing for improving
the ductility and the strength of non-ductile column joints. To
achieve this purpose, eight specimens were tested under static
and cyclic loading. These specimens were divided into four
groups to study some variables.
Group (1) comprises of two controlled specimens
without any jackets one of them experimented statically while
the other was cyclically loaded, Group (2) comprises of one
specimen which has been retrofitted by SIFCON up to half of
column’s height and subjected to cyclic loading, Group (3)
comprises of four specimens with SIFCON jacket in two
direction for one specimen and SIFCON jacket all around the remaining specimens up to the tip of the columns which have
been subjected to static and cyclic loads up to failure. The last
group (4) comprises of one specimen which has been
retrofitted with traditional method by using HSC and
subjected to cyclic loading. In addition to the previous, a
theoretical analysis have been performed by using a
commercial program ANSYS and the experimental results
were compared with the analytical results.
This research indicate that the use of SIFCON jackets
for retrofitting column joints improve its capacity, energy
dissipation capacity and its ductility for resisting seismic
loads.