الفهرس 
EXPERIMENTAL STUDYOnly 14 pages are availabe for public view
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Abstract
This research presents an experimental-analytical investigation
in the structural behavior of RC fixed-fixed beams strengthened to resist
torsion stresses by different schemes of strengthening using CFRP sheets as
phase one, as well as investigation of the effect of the change in the
longitudinal steel ratio and vertical steel ratio on the resistance of torsion of
Beams strengthened with CFRP as phase two. The experimental program
consisted of statically testing five medium scale specimens for phase one as
well as ten specimens with the same dimensions for phase two. The beams
had 150x300 mm rectangular cross-sectional dimensions with overall
length of 2000mm over a clear span of 1500 mm. The tested specimens
were divided into two phases; phase one consists of one group of beams the
first beam (B1) was a control beam while the other four beams
(B2,B3,B4,B5) were strengthened in different schemes with CFRP to resist
torsion. Phase two consists of three groups of beams each of them discuss
the effect of a parameter on the torsional efficiency of RC strengthened
beams. The comparison will always take place with beam B1 as a control
beam and Beam B3 as the best scheme as concluded from phase one. The
latter studies are suggested to aim at developing design oriented guidelines
concerning the behavior of RC beams strengthened in torsion by FRP
sheets.