Strengthening of shear-critical reinforced concrete T-beams with anchored and non-anchored GFRP fabrics applications

AL-Shalif, Sadeq A.H.; Akın, Arife; Aksoylu, Ceyhun; Arslan, Musa Hakan

doi:10.1016/j.istruc.2022.08.044

Cited by 20 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was evident in the Hyogoken-Nanbu Earthquake of 1995, where concrete structures, especially reinforced concrete piers and rigid frames in elevated highways, suffered considerable damage. Upgrading these structures is essential to improve their resilience against future natural disasters [1,2].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Studies on Low-Cost Glass-Fiber-Reinforced-Polymer-Composite-Strengthened Reinforced Concrete Beams: A Comparison with Carbon/Sisal Fiber-Reinforced Polymers

Rodsin,

Ejaz,

Hussain

et al. 2023

Polymers

View full text Add to dashboard Cite

This study presents an experimental framework with seventeen beams to investigate the impact of loading type, configuration, and through-bolt anchorage on LC-GFRP (Low-Cost Glass-Fiber-Reinforced Polymer) confinement performance. Beams underwent three-point and four-point bending, with LC-GFRP applied in various ways, including U-shaped, side-bonded, and fully wrapped, with and without anchors. The performance of LC-GFRP was compared to CFRP (Carbon-Fiber-Reinforced Polymer) and sisal wraps. LC-GFRP in side-bonded and U-shaped configurations without anchors under three-point bending showed no shear failure, while those under four-point bending without anchors experienced shear failure. With anchors, U-shaped configurations successfully prevented shear failure. The side-bonded, U-shaped, and U-shaped configurations along the full span with anchors demonstrated peak capacity enhancements of 72.11%, 43.66%, and 68.39% higher improvements than the corresponding configurations without anchors, respectively. Wrapping all sides of the beam with LC-GFRP or CFRP prevented shear failure without additional anchors, with complete wrapping being the most efficient method. When anchors were used, significant capacity enhancements were observed. Existing shear strength prediction models were evaluated, highlighting the need for more tailored expressions for LC-GFRP confinement, especially for non-U-shaped configurations.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Studies on Low-Cost Glass-Fiber-Reinforced-Polymer-Composite-Strengthened Reinforced Concrete Beams: A Comparison with Carbon/Sisal Fiber-Reinforced Polymers

Rodsin,

Ejaz,

Hussain

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…Most of the existing studies on the behavior of reinforced concrete (RC) beams with a web opening chose to use the FRP reinforcement for the strengthening of the opening region [ 29 , 30 ]. FRP was found to be effective for strengthening RC members in structures because of its excellent mechanical properties [ 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. FRP reinforcement schemes can be implemented in different ways.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Eccentric Web Openings on the Compressive Performance of Pultruded GFRP Boxes Wrapped with GFRP and CFRP Sheets

et al. 2022

View full text Add to dashboard Cite

Pultruded fiber-reinforced polymer (PFRP) profiles have started to find widespread use in the structure industry. The position of the web openings on these elements, which are especially exposed to axial pressure force, causes a change in the behavior. In this study, a total of 21 pultruded box profiles were tested under vertical loads and some of them were strengthened with carbon-FRP (CFRP) and glass-FRP (GFRP). The location, number and reinforcement type of the web openings on the profiles were taken into account as parameters. As a result of the axial test, it was understood that when a hole with a certain diameter is to be drilled on the profile, its position and number are very important. The height-centered openings in the middle of the web had the least effect on the reduction in the load-carrying capacity and the stability of the profile. In addition, it has been determined that the web openings away from the center and especially the eccentric opening significantly reduces the load carrying capacity. Furthermore, when double holes were drilled close to each other, a significant decrease in the capacity was observed and strengthening had the least effect on these specimens. It was also determined that the specimens reinforced with carbon FRP contribute more to the load-carrying capacity than GFRP.

show abstract

“…Furthermore, the deformation behavior of TRC has been analyzed and was demonstrated to be advantageous under higher residual bearing capacity, which can maintain structural integrity [ 2 ]. Aksoylu studied various properties of CFRP- and GFRP-reinforced composites and obtained many important achievements [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. Yin and Xu enhanced the flexural properties of TRC by sanding the fabric’s surface and incorporating polypropylene fibers into the concrete [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids

et al. 2022

View full text Add to dashboard Cite

Textile-reinforced concrete (TRC) is a cement-based composite material that uses textile as a reinforcement material. The weft-direction fiber bundles in the traditional orthogonally arranged warp–weft textile hardly bear force, and its bonding strength with the weft fiber bundle is not ideal. Under the action of force, a small included angle between the stressed fiber bundle and the stressed direction can effectively increase the anchoring effect of their fibers in the matrix, resulting in higher bonding and reinforcement efficiency. To improve the utilization rate of fibers and the bonding strength between the textile and the concrete matrix, an arrangement along the diagonal of the grids was proposed in this paper. The flexural properties of basalt TRC plates with orthogonal grids (OG-BTRC) and plates with nonorthogonal grids (NOG-BTRC) with different grid angles and grid sizes with different laying methods, namely, a side layout (SL) and diagonal layout (DL), were studied through four-point bending tests. A comparative analysis was carried out with an ABAQUS simulation and the test results. The results showed that with a decrease in the grid angle, the BTRC specimens gradually showed a failure mode of multiple cracks, and most of the cracks appeared in the pure bending area; as the grid angle decreased, the BTRC specimens exhibited excellent flexural bearing capacity, good ductility, and high toughness. The total number of cracks on the specimen increased when it failed, while the spacing of the cracks decreased, and the fracture morphology appeared as fine and uniform features. The toughness of the specimen with a small grid angle using the DL laying method was greater than that using the SL laying method. The software simulation value matched the test data well, which proved that the test result was reliable.

show abstract

Strengthening of shear-critical reinforced concrete T-beams with anchored and non-anchored GFRP fabrics applications

Cited by 20 publications

References 31 publications

Experimental and Analytical Studies on Low-Cost Glass-Fiber-Reinforced-Polymer-Composite-Strengthened Reinforced Concrete Beams: A Comparison with Carbon/Sisal Fiber-Reinforced Polymers

Experimental and Analytical Studies on Low-Cost Glass-Fiber-Reinforced-Polymer-Composite-Strengthened Reinforced Concrete Beams: A Comparison with Carbon/Sisal Fiber-Reinforced Polymers

The Effects of Eccentric Web Openings on the Compressive Performance of Pultruded GFRP Boxes Wrapped with GFRP and CFRP Sheets

Flexural Properties of Textile-Reinforced Concrete with Nonorthogonal Grids

Contact Info

Product

Resources

About