An Experimental Study of Monolithic & Hybrid Fiber Reinforced Polymer for Strengthening Reinforced Concrete Beams in Bending
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International Journal of Engineering Trends and Technology (IJETT) | 
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| © 2017 by IJETT Journal | ||
| Volume-47 Number-5 |
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| Year of Publication : 2017 | ||
| Authors : V.Shakila, Mr.K.Soundhirarajan |
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| DOI : 10.14445/22315381/IJETT-V47P249 |
Citation
V.Shakila, Mr.K.Soundhirarajan "An Experimental Study of Monolithic & Hybrid Fiber Reinforced Polymer for Strengthening Reinforced Concrete Beams in Bending", International Journal of Engineering Trends and Technology (IJETT), V47(5),303-313 May 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
Due to the increasing deterioration of
reinforced concrete heritage structures, the repair
and strengthening industry has become a very hot
business in most parts of the world. There are also
various methods to prolong the service life of these
deteriorated structures varying in their effectiveness
and initial cost. There are also various repair
principles from organizations, which are sometimes
difficult to attain in the real world. These principles
have a wide range of influence on reinforced concrete
heritage structures which should pass from
generation to generation. To select an effective repair
method for a deficient concrete member or structure,
the effect or damage of the cause should be studied
deeply using field and laboratory investigation
techniques. If the cause of the damage is known, an
appropriate strengthening technique can be selected.
Mostly the damages are expressed in terms of cracks
of a member or structure. To meet up the
requirements of advance infrastructure, new
innovative materials/ technologies in Civil
engineering industry has started to make its way. Any
technology or material has its limitations and to meet
the new requirements new technologies have to be
invented and used. With structures becoming old and
the increasing bar for the constructed buildings the
old buildings have started to show a serious need of
additional retrofits to increase their durability and
life.
The aim of this project work is use of FRP
for confinement has proved effective in retrofitting
and strengthening applications. The Confinement in
seismically active regions has proven to be one of the
early applications of FRP materials in infrastructure
applications. Confinement may be beneficial in nonseismic
zones too, where, for instance, survivability of
explosive attacks is required or the axial load
capacity of a column must be increased due to higher
vertical loads, e.g. if new storey’s have to be added to
an existing building or if an existing bridge deck has
to be widened. In any case, confinement with FRP
may be provided by wrapping RC columns with
prefabricated jackets or in situ cured sheets, in which
the principal fiber direction is circumferential.
Beams, Plates and columns may be strengthened in
flexure through the use of FRP composites bonded to
their tension zone using epoxy as a common adhesive
for this purpose. The direction of fibers is parallel to
that of high tensile stresses. Both prefabricated FRP
strips, as well as sheets (wet-layup) are applied.
Hence, FRP composites are finding ways to prove
effective and economical at the same time.
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Keywords
Monolithic Fibre Reinforced Polymers,
Hybrid Polymer,specimen test, strengthening test.