Flexural Strengthening of Reinforced Concrete Beams Using Valid Strengthening Techniques

Bashandy, Alaa A.

doi:10.2478/ace-2013-0015

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…In the last few decades, many studies have been conducted on the flexural strengthening of reinforced concrete (RC) beams using different strengthening techniques such as concrete, steel and artificial fiber reinforced polymer composites (FRP) [1]- [6]. Among artificial FRPs, mainly glass, carbon and aramid fibers have been considered extensively [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Flexural Response of JFRP and BFRP Strengthened RC Beams

Joyklad¹,

Suparp²,

Hussain³

2019

IJET

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In the last few decades, many studies have been conducted on the flexural strengthening of reinforced concrete (RC) beams using different strengthening techniques such as concrete, steel and artificial fiber reinforced polymer composites (FRP). Among artificial FRPs, mainly glass, carbon and aramid fibers have been considered extensively. This study presents an experimental investigation on the flexural strengthening of small scale RC beams using natural fibers such as jute fiber reinforced polymer composites (JFRP) and basalt fiber reinforced polymer (BFRP) composites. A total number of five RC beams were constructed and tested under three point bending loading scheme to investigate the flexural response of both un-strengthened and FRP strengthened RC beams. Two types of strengthening techniques were adopted to strengthen RC beams. In strengthening technique A, the fiber was applied only at the tension side of the RC beams whereas in strengthening technique B, the fiber was applied both at sides and at the bottom in the form of U shape. The results indicate that use of both strengthening materials such as JFRP and BFRP is very effective to enhance ultimate load carrying capacity of RC beams. Further it was found that strengthening technique B is more efficient as compared with the strengthening technique A.

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Section: Introductionmentioning

confidence: 99%

Flexural Response of JFRP and BFRP Strengthened RC Beams

Joyklad¹,

Suparp²,

Hussain³

2019

IJET

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“…With regard to the risk of exceeding the ultimate limit state and serviceability limit state as a result of new designed loads, it is necessary to select an economically and constructionally optimal design solution. The problem of strengthening reinforced concrete beams has been analysed many times in available monographs and scientific articles [ 46 , 47 , 48 , 49 ]. Based on published solutions and their own research experience, the authors have made a variant assessment of the possibility of reinforcing the existing structure in terms of its continued safe use.…”

Section: Analysis Of Opportunities For Strengtheningmentioning

confidence: 99%

Diagnostics of the RC Roofing Structure of the 100-Year-Old Municipal Theatre Facility

2022

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Reinforced concrete has been a widely used material for the construction of buildings for many decades. However, with the passage of time, the material characteristics and connection of structural elements gradually degrade. Development in measurement technology makes it possible to efficiently obtain data on the current state of the structure and material characteristics using non-destructive methods, with limited or no destructive testing. The paper presents the analysis of the condition of the reinforced concrete roof of a 100-year-old theatre building in terms of its further use after planned modernisation. The tests carried out in situ as well as the computational analysis of structure are described. Based on the test results, the current load-bearing capacity was assessed and the limit state conditions were checked. Limitations on the accuracy of the non-destructive test results in relation to the destructive test results were formulated. Options for the strengthening reinforced concrete beams with regard to structural and technological considerations were analysed.

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“…All damage specimens were repaired and strengthened with their exiting deformation as shown in figure (6). Thereafter, all the specimens were grouted by The Cetorex grout by water/grout ratio = 0.10 as shown in figure (7).…”

Section: Iiiexperimental Program and Testing Proceduresmentioning

confidence: 99%

“…Anchor bolts had adverse effects on the ductility's of the beams with thin plates, and the use of perforated steel plates was found to be an efficient method for increasing the ductility of a strengthened beam. ALaa A. Bashandy (2013) [6] investigated strengthening reinforced concrete beams using concrete layer, reinforced concrete layer and steel plates. Thirty-nine 100x150x1100 mm reinforced concrete beams were cast.…”

Section: Iintroductionmentioning

confidence: 99%

Retrofitting and Strengthening of Reinforced Concrete Damaged Beams using jacketing of Steel Wire Mesh with Steel Plates

Abd-Elhamed¹

2015

IJERT

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The purpose of this research is to use jacketing of steel wire mesh with steel plates for retrofitting and strengthening of damaged beams completely failed having deformation. Thirteen reinforced concrete beams having a cross section of (100x160) mm and a length of (1250) mm were tested until failure. All specimens were repaired and strengthened with their exiting deformation. The specimens were divided into five groups. Group one consisted of one specimen strengthened with only expanded three plies steel wire mesh. Group two consisted of three specimens strengthened with steel plates (20, 40 and 60 mm) signed inside three plies expanded steel wire mesh. Groups 3, 4 and 5 each consisted of three specimens strengthened with three plies wire mesh with additional external steel plates (20, 40 and 60 mm) fixed with different number (3, 5 and 7) of steel fisher bolts. The strengthened beams were incrementally loaded up to maximum load capacities. The results showed that the effect of strengthening with three plies wire mesh on the ultimate capacity of beams will have an increase about 30%. Also, the increase of cross sections area of steel plates increase the ultimate load capacity from 47% to 60%. The use of different number of fisher bolts contributed to an additional increase in the ultimate load capacity ranging from (2% to 4%). Increase of cross sections of steel plates as well as number of fisher bolts decreases the mid span deflection of beams from (1% to 14%)..

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Flexural Strengthening of Reinforced Concrete Beams Using Valid Strengthening Techniques

Cited by 9 publications

References 6 publications

Flexural Response of JFRP and BFRP Strengthened RC Beams

Flexural Response of JFRP and BFRP Strengthened RC Beams

Diagnostics of the RC Roofing Structure of the 100-Year-Old Municipal Theatre Facility

Retrofitting and Strengthening of Reinforced Concrete Damaged Beams using jacketing of Steel Wire Mesh with Steel Plates

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