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V. P. Ramana et.al summarizes the results of experimental and analytical studies on the flexural strengthening of reinforced concrete beams by the external bonding of high-strength, light-weight carbon fiber reinforced polymer composite (CFRPC) laminates to the tension face of the beam.
was recently introduced as an alternative strengthening strength of reinforced concrete members .NSM method is also been used to enhance the shear capacity of RC beams. This is done by cutting grooves at the side of the RC beams within the concrete cover. Various studies have been
FLEXURAL STRENGTHENING OF REINFORCED CONCRETE BEAMS USING FIBRE REINFORCED POLYMER LAMINATE: A REVIEW
Iron based shape memory alloys (Fe-SMA) have recently been used as active flexural strengthening material for reinforced concrete (RC) beams. Fe-SMAs are characterized by a shape memory effect (SME) which allows the recovery of previously induced plastic deformations through heating. If these deformations are restrained a recovery stress is generated by the SME. This recovery stress can be ...
One application of composite materials in civil engineering is examined: the strengthening of a reinforced concrete beamin situ by externally-bonded fiber reinforced plastic (FRP). Studies of the mechanical properties of the interface and the rheological behaviour of composite materials are very important to design. For the experimental determination of the mechanical properties of the ...
Strengthening of reinforced concrete beams in flexure using externally bonded composite laminate of high tensile strength is easy and of the minimum cost compared to traditional methods such as increasing the concrete section depth or reinforcement that requires formwork and curing which affect the structure usability.
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THE STRENGTH OF CONCRETE BEAMS. By RICHARD L. HUMPHREY. INTRODUCTION. SCOPE OF INVESTIGATIONS. The tests of concrete beams described in this bulletin form a part of a comprehensive series of investigations undertaken by the United States Geological-Survey for the purpose of determining the strength of concrete and reinforced concrete.
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2014-06-06 · 1 Paper submitted to The IES Journal Part A: Civil & Structural Engineering (Feb 2011) The Use of Bolted Steel Plates for Strengthening of Reinforced Concrete Beams and Columns . Su RKL1, Cheng B1, Wang L1, Siu WH2, Zhu Y3. 1 The University of Hong Kong, Hong Kong, China 2 Ove Arup and Partners Hong Kong Limited, Hong Kong, China 3 University of Guangzhou, Guangzhou, China
A theory for the shear strength of reinforced concrete rectangular and T-section beams, with or without axial forces, is described. This theory is an extension of the theory for slender rectangular and T-beams without axial forces described in previous work. This generalized theory results in a simple expression for the shear strength, which is ...
and fiber reinforced polymer. Sprayed Concrete It is one of the oldest materials and the most common techniques of repairing and strengthening of reinforced concrete structures. Sprayed concrete has been used in that field for almost 90 years. Diab (1998) described the technique of strengthening of reinforced concrete beam by using sprayed ...
Mar 03, 2018 · Strengthening of RCC beams. The need for strengthening a reinforced concrete beam or a number of beams in a structure is usually caused by problems due to degradation of characteristics of materials with time, reduction in cross section, corrosion, wrong initial design or the increase in the load demand on the building when its utilized for a new purpose other than it was intended to.
Oct 05, 2017 · Strengthening of Reinforced-Concrete Beams in Shear with a Fabric-Reinforced Cementitious Matrix. ... Structural strength, Concrete beams, ...
2010-09-09 · strengthening components for the repair and strengthening of reinforced concrete beams. The ferrocement was used, in general, to replace the damaged concrete and reinforcement (if also damaged). The experiment’s results shown that the strengthen beams presented improved cracking resistance, flexural
strengthening existing concrete beams is needed so an unsafe or unuseable structure can once again be utilized. The method of epoxy-bonding steel plates and fiberglass reinforced plastics to the tensile face of reinforced concrete beams has been studied extensively as a method to strengthen existing reinforced concrete structures.
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Free Online Library: Flexural strengthening of reinforced concrete beams using GFRP composites.(glass fiber reinforced polymer, Report) by "International Journal of Applied Engineering Research"; Engineering and manufacturing Concrete beams Materials Mechanical properties Fiber reinforced composites Usage Glass fibers Hardening (Curing) Methods Laminated materials Laminates
1 1 Shear Strengthening of Reinforced Concrete Beams with Hybrid Composite 2 Plates 3 4 Hadi Baghi1, , Joaquim A. O. Barros1 and António Ventura-Gouveia 2 5 1 ISISE, Department of Civil Engineering, University of Minho, Guimarães, Portugal6 2 ISISE, Department of Civil Engineering, School of Technology and Management of Viseu, Viseu, Portugal
reinforced polymer (BFRP) that is glued to the RC concrete member with an adhesive. The most common adhesive used for strengthening is epoxy. There are some limitations with the use of epoxy adhesives, including poor fire resistance. Therefore, other adhesive was used to strengthen concrete beams in flexure.
In this study the efficiency of the use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) for the strengthening of existing Reinforced Concrete (RC) beams has been investigated. Experimental work has been conducted to determine UHPFRC material properties.
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strength provided by the carbon FRP laminates decreases. Compared to a beam reinforced heavily with steel only, beams reinforced with both steel and carbon have adequate deformation capacity, in spite of their brittle mode of failure. Clamping or wrapping of the ends of the
Although being one of the most popular strengthening techniques in reinforced concrete beams, the use of steel plates bonded to the soffit raises problems of ductility. This study aims at investigating the influence of the use of perforated steel plates instead of solid steel plates on the ductility of reinforced concrete beams.
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Using externally bonded (EB) carbon fiber reinforced polymer (CFRP) laminates is nowadaysa common technique to improve the flexural capacity of reinforced concrete (RC) members. The first application of bonded CFRP composites for flexural strengthening of reinforced concrete bridges took place in late 1980s (Bakis et al., 2002).
These materials possess high strength capacity and corrosion resistance and can be employed as the main reinforcements in combination with adhesives and anchorages to strengthen reinforced concrete (RC) beam members. RC beams are designed to provide resistance against flexure, shear, torsion, fatigue, impact, and blast loading.
This book presents a detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforces polymer composite plates. It is based to a large extent on material developed or provided by the consortium which studied the technology of plate bonding to upgrade structural units using carbon fibre / polymer ...
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