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Bilal El-Ariss

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University of Cagliari

Anant Parghi, Ph.D., P.Eng., C.Eng.

University of Manitoba

Iolanda Craifaleanu

Technical University Of Civil Engineering, Bucharest

Triantafyllos K . Makarios, Ph.D. Professor

Aristotle University of Thessaloniki

Flavio Stochino

University of Cagliari

Mataram University

Barzin Mobasher

Arizona State University

RMIT University

Osama El Hariri

Banha University At Egypt

Ecole Centrale Paris

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Papers by Bilal El-Ariss

Finite Element Modelling of Shear Critical Concrete Beams Reinforced with Basalt Fibres and Basalt Bars

Proceedings of the International Conference on Civil, Structural and Transportation Engineering, Jun 1, 2024

Finite element (FE) models capable of simulating the nonlinear shear behaviour of concrete beams ... more Finite element (FE) models capable of simulating the nonlinear shear behaviour of concrete beams reinforced with basalt fibres (BF) and basalt fibre-reinforced polymer (BFRP) bars were developed. Experimental tests were carried out to verify the validity of the prediction of the FE models. A parametric study was then conducted to investigate the effectiveness of using BF at different volume fractions (vf) to upgrade the shear capacity of BFRP-reinforced concrete beams made with recycled concrete aggregates (RCA) with different replacement percentages. Published characterization test results were used as input data in the FE modelling. Results of the FE analysis indicated that beam models with RCA replacement percentages of 30-100% exhibited 10-28% reductions in the shear capacity compared with that of a control beam model made with natural aggregates (NA). The beam models with 30 and 60% RCA containing BF at vf = 0.5% exhibited a shear capacity comparable to or higher than that of the control beam model with NA. Despite the improvement in the shear response of the beam models with 100% RCA caused by the addition of BF, their shear capacity was lower than that of the control beam model with NA. The shear capacity of the beam model with 100% RCA containing BF at vf = 1.5% was 93% of that of the control beam model with NA.

Teaching Graduate Attributes: Case Study Civil Engineering

Society for Information Technology & Teacher Education International Conference, Mar 2, 2009

... United Arab Emirates University, Al Ain, UAE; Email: [email protected] ... This paper ... more

GFRP Reinforced Inverted T Beams: An Experimental Study

Proceedings of International Structural Engineering and Construction, Jun 1, 2022

The shear behavior of four Inverted T beam specimens totally reinforced with GFRP (glass fiber re... more The shear behavior of four Inverted T beam specimens totally reinforced with GFRP (glass fiber reinforced polymer) transverse and flexural reinforcement is presented to analyze the effects of transverse reinforcement spacing and flexural reinforcement ratio on the beam structural performance. All beams had a span-to-depth ratio of 1.4. Main parameters comprised GFRP flexural reinforcement ratio of 2.5 and 4 times the balance reinforcement ratio and stirrups spacing of 75 and 120 mm. The load-displacement curves and the load-strain results of the stirrups and flexural reinforcement are reported in detail. Increasing the transverse reinforcement area notably improved both the loadcarrying capacity and the stiffness of the beams. Similarly, the ductility and capacity were upgraded when the flexure reinforcement ratio of the beams was increased. It can be concluded that increasing the transverse reinforcement area and flexural reinforcement ratio substantially improved the structural safety and crack control of the inverted T beams.

Effect of Basalt Fibers on Properties of Normal and High Strength Concrete Made with Dune Sand

World Congress on Civil, Structural, and Environmental Engineering

The effect of inclusion of basalt fibers (BF) on properties of normal-and high-strength concrete ... more The effect of inclusion of basalt fibers (BF) on properties of normal-and high-strength concrete (NSC and HSC) made with dune sand is investigated in this paper. Dune sand served as fine aggregates to promote environmental sustainability. Test variables included the concrete grade (NSC and HSC) and the BF volume fraction (0, 0.5, 1, and 1.5%). The BF had a length of 43 mm and a diameter of 0.72 mm. The slump, compressive and splitting tensile strengths of the mixes with BF were determined experimentally and compared to those of benchmark plain mixes. The addition of BF resulted in a slump reduction in the range 44 to 79%. The slump of NSC and HSC mixes decreased almost at the same rate with an increase in the BF volume fraction. The compressive strength of the mixes with and without BF were insignificantly different. Normal-strength concrete with and without BF had a cylinder-to-cube compressive strength ratio (f ' c/fcu) of approximately 0.91. The plain HSC mix also showed a f ' c/fcu ratio of 0.91 whereas HSC mixes with BF exhibited a slightly lower f ' c/fcu ratio with an average value of 0.87. The splitting tensile strength increased with an increase in the BF volume fraction. The enhancement in the splitting tensile strength was more pronounced for the NSC mixes. The splitting tensile strength gain caused by the addition of BF was in the range of 10 to 52% for the NSC mixes and 3 to 22% for the HSC mixes.

Inverted T-Beams in Structures: A Review

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

Performance and analysis of inverted T-beams have not been extensively studied. In this paper, in... more Performance and analysis of inverted T-beams have not been extensively studied. In this paper, information on the use of inverted T-bent caps are gathered. Existing technologies, web design guidelines for shear, and strengthening techniques are analyzed. Drawing from the collected literature, the use of fiber reinforced polymers (FRP) materials in inverted T-beams are still in their infancy, and recommendations for future work in this area are furnished in this study.

Flexural and shear performance of geopolymer concrete reinforced with hybrid glass fibers

Journal of building engineering, Aug 1, 2023

Numerical Modeling of Concrete Deep Beams Made with Recycled Aggregates and Steel Fibers

Buildings, Apr 21, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Nonlinear time-dependent analysis of externally/internally prestressed reinforced concrete beams

Behavior of beams with dowel action

Engineering Structures, Jun 1, 2007

... The dowel action behavior of the reinforcement bars crossing cracks in the concrete is analyz... more

Properties of Slag-Fly Ash Blended Geopolymer Concrete Reinforced with Hybrid Glass Fibers

Buildings, Jul 28, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Shear Strength of Steel Fiber-Reinforced Recycled Aggregates Concrete Deep Beams

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

The effectiveness of steel fibers to improve the shear behavior of recycled aggregates concrete d... more The effectiveness of steel fibers to improve the shear behavior of recycled aggregates concrete deep beams is investigated experimentally in this paper. Three large-scale concrete deep beams with a shear span-to-depth ratio (a/h) of 1.6 were tested. Two beams had a 100% recycled concrete aggregates (RCA) replacement ratio whereas one beam was made with natural aggregates (NA) to act as a benchmark. One of the RCA beams included steel fibers at a volume fraction of 1%. The use of a 100% RCA significantly impaired the beam stiffness, reduced the cracking load by 25%, and decreased the shear strength by 5%. The use of steel fibers in a RCA beam delayed initiation of shear cracks, improved the beam stiffness, and fully restored the original shear capacity.

On the Numerical Modelling of Steel Beams Strengthened by Purely Fastened FRP Sheets

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Mar 1, 2023

Strengthening of steel beams using fasteners was recently introduced by a few researchers to over... more Strengthening of steel beams using fasteners was recently introduced by a few researchers to overcome the undesirable debonding failure of the adhesively bonded FRP-steel beams. This paper investigates numerically the performance of steel beams strengthened by FRP sheets anchored using steel fasteners without a bonding agent. Detailed numerical models of fastened FRP-steel beams were developed using ANSYS software and verified against published experimental results. The calculated error between the experimental and numerical ultimate loads ranged from 2.6 to 10.2% proving the accuracy of the developed model. The verified model was used to evaluate the effectiveness of applying the fastening technique in enhancing the load capacity of FRP-steel beams subjected to one-point and two-point loads while adopting various FRP thicknesses of 3.175, 6.35 and 12.7 mm. Ultimate load improvements of 7.8, 20.2 and 25.8% were obtained for beams subjected to one-point load and fastened by the 3.175, 6.35 and 12.7 mm thick FRP sheets, respectively. Meanwhile, beams subjected to two-point loads showed 18.7, 21.5 and 25.2% enhancements in the ultimate load for the three thicknesses, respectively. Increasing the thickness of the FRP sheet boosted the ultimate load of the fastened FRP-steel beam; however, the ductility of the system was reduced.

Flexural Performance of Steel Beams Strengthened by Fastened Hybrid FRP Strips Utilizing Staggered Steel Bolts

Buildings, Dec 6, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Early-Age Properties of Slag-Fly Ash Blended Geopolymer Concrete Reinforced with Glass Fibers – A Preliminary Study

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

This research investigates the effect of additional water content, glass fibers addition, glass f... more This research investigates the effect of additional water content, glass fibers addition, glass fiber length, and the handling time on the workability, 1-and 7-day compressive strength, and 7-day splitting tensile strength of slag-fly ash blended geopolymer concrete. The additional water content ranged from 0 to 100 kg/m 3. Two types of glass fibers were used with lengths of 24 and 43 mm and incorporated by up to 2 and 1.5%, by volume, respectively. Also, the handling time, representing the time from mixing to casting, was varied. The experimental results showed that the additional water content led to a significant increase in the slump and decrease in the 1-and 7-day compressive strengths of plain geopolymer concrete. A value of 75 kg/m 3 was required to attain a slump of 150 mm and 7-day compressive strength of 35 MPa. Furthermore, the addition of 24-mm long glass fibers reduced the slump and increased the compressive and splitting tensile strength by up to 23 and 40%, respectively, compared to the plain control mix. Longer glass fibers (43 mm) resulted in further slump loss and increase in the splitting tensile strength, while the compressive strength was unaffected. Extending the handling time led to lower workability and limited impact on the mechanical properties.

Experimental and Numerical Investigation of the Behavior of Steel Beams Strengthened by Bolted Hybrid FRP Composites

Buildings, Mar 21, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more

Performance of FRP-Steel Joints and FRP-Steel Beams Fastened by FRP Anchors

Proceedings of the 8th International Conference on Civil, Structural and Transportation Engineering (ICCSTE 2023)

This paper reports on the experimental results of utilizing anti-corrosive FRP anchors in FRP-ste... more This paper reports on the experimental results of utilizing anti-corrosive FRP anchors in FRP-steel joints and FRP-steel beams for strengthening purposes. The FRP anchors were introduced in replacement of the steel bolts typically used in the mechanical fastening methods of strengthening steel structures. FPR laminates were fastened to steel plates in a double-lap arrangement using 10 mm and 13 mm diameter FRP anchors without a bonding agent. The tested joints showed good bearing between the anchors and the fastened FRP laminates. FRP-steel joints fastened by the 10 mm diameter anchors experienced early shear fracture, risking the joints' ductility. Better ultimate load capacity, bearing and ductility were attained by utilizing the 13 mm anchors compared to the 10 mm anchors. The fastening technique was then implemented on full-scale steel beams by fastening the FRP laminates to the beams' bottom flange using the 13 mm FRP anchors. The flexural performance of the beams under two point loads was reported in view of the loaddeflection curves, observed failure modes and strain measurements. The strengthened beams showed good bearing between the anchors and the laminates before the fracture of the anchors occurred. The strengthened beams showed higher ultimate load capacity than the unstrengthened beams, opening the horizon for additional investigations on the utilization of FRP anchors in strengthening steel beams.

External Mitigating Technique for Progressive Collapse of Framed Structures

Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

Behavior of Shear-Critical Recycled Aggregate Concrete Beams Containing BFRP Reinforcement

Buildings

The shear performance of recycled aggregates beams reinforced with basalt fiber-reinforced polyme... more The shear performance of recycled aggregates beams reinforced with basalt fiber-reinforced polymer (BFRP) bars is evaluated and compared with that of similar beams made with natural aggregates (NA). Six beams with a shear span-to-effective depth ratio (a/d) of 3.0 were tested to failure. Test variables consisted of the recycled concrete aggregate (RCA) replacement percentage (60 and 100%) and the presence of BFRP stirrups in the shear span. Experimental results showed that a RCA replacement of 60% marginally reduced (5%) the shear capacity. However, the reduction in the shear capacity was more pronounced (17%) for the specimen made with 100% RCA. The contribution of BFRP stirrups to the shear capacity decreased with an increase in the RCA replacement percentage. The width of the major shear crack at a given value of load was higher for the beams with RCA. The deflection values at the ultimate load were greater for beams made with RCA. A codified analytical approach as well as a mode...

Flexural and shear performance of geopolymer concrete reinforced with hybrid glass fibers

Journal of Building Engineering

Flexural Performance of Steel Beams Strengthened by Fastened Hybrid FRP Strips Utilizing Staggered Steel Bolts

Buildings, Dec 6, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Finite Element Modelling of Shear Critical Concrete Beams Reinforced with Basalt Fibres and Basalt Bars

Proceedings of the International Conference on Civil, Structural and Transportation Engineering, Jun 1, 2024

Finite element (FE) models capable of simulating the nonlinear shear behaviour of concrete beams ... more Finite element (FE) models capable of simulating the nonlinear shear behaviour of concrete beams reinforced with basalt fibres (BF) and basalt fibre-reinforced polymer (BFRP) bars were developed. Experimental tests were carried out to verify the validity of the prediction of the FE models. A parametric study was then conducted to investigate the effectiveness of using BF at different volume fractions (vf) to upgrade the shear capacity of BFRP-reinforced concrete beams made with recycled concrete aggregates (RCA) with different replacement percentages. Published characterization test results were used as input data in the FE modelling. Results of the FE analysis indicated that beam models with RCA replacement percentages of 30-100% exhibited 10-28% reductions in the shear capacity compared with that of a control beam model made with natural aggregates (NA). The beam models with 30 and 60% RCA containing BF at vf = 0.5% exhibited a shear capacity comparable to or higher than that of the control beam model with NA. Despite the improvement in the shear response of the beam models with 100% RCA caused by the addition of BF, their shear capacity was lower than that of the control beam model with NA. The shear capacity of the beam model with 100% RCA containing BF at vf = 1.5% was 93% of that of the control beam model with NA.

Teaching Graduate Attributes: Case Study Civil Engineering

Society for Information Technology & Teacher Education International Conference, Mar 2, 2009

... United Arab Emirates University, Al Ain, UAE; Email: [email protected] ... This paper ... more

GFRP Reinforced Inverted T Beams: An Experimental Study

Proceedings of International Structural Engineering and Construction, Jun 1, 2022

The shear behavior of four Inverted T beam specimens totally reinforced with GFRP (glass fiber re... more The shear behavior of four Inverted T beam specimens totally reinforced with GFRP (glass fiber reinforced polymer) transverse and flexural reinforcement is presented to analyze the effects of transverse reinforcement spacing and flexural reinforcement ratio on the beam structural performance. All beams had a span-to-depth ratio of 1.4. Main parameters comprised GFRP flexural reinforcement ratio of 2.5 and 4 times the balance reinforcement ratio and stirrups spacing of 75 and 120 mm. The load-displacement curves and the load-strain results of the stirrups and flexural reinforcement are reported in detail. Increasing the transverse reinforcement area notably improved both the loadcarrying capacity and the stiffness of the beams. Similarly, the ductility and capacity were upgraded when the flexure reinforcement ratio of the beams was increased. It can be concluded that increasing the transverse reinforcement area and flexural reinforcement ratio substantially improved the structural safety and crack control of the inverted T beams.

Effect of Basalt Fibers on Properties of Normal and High Strength Concrete Made with Dune Sand

World Congress on Civil, Structural, and Environmental Engineering

The effect of inclusion of basalt fibers (BF) on properties of normal-and high-strength concrete ... more The effect of inclusion of basalt fibers (BF) on properties of normal-and high-strength concrete (NSC and HSC) made with dune sand is investigated in this paper. Dune sand served as fine aggregates to promote environmental sustainability. Test variables included the concrete grade (NSC and HSC) and the BF volume fraction (0, 0.5, 1, and 1.5%). The BF had a length of 43 mm and a diameter of 0.72 mm. The slump, compressive and splitting tensile strengths of the mixes with BF were determined experimentally and compared to those of benchmark plain mixes. The addition of BF resulted in a slump reduction in the range 44 to 79%. The slump of NSC and HSC mixes decreased almost at the same rate with an increase in the BF volume fraction. The compressive strength of the mixes with and without BF were insignificantly different. Normal-strength concrete with and without BF had a cylinder-to-cube compressive strength ratio (f ' c/fcu) of approximately 0.91. The plain HSC mix also showed a f ' c/fcu ratio of 0.91 whereas HSC mixes with BF exhibited a slightly lower f ' c/fcu ratio with an average value of 0.87. The splitting tensile strength increased with an increase in the BF volume fraction. The enhancement in the splitting tensile strength was more pronounced for the NSC mixes. The splitting tensile strength gain caused by the addition of BF was in the range of 10 to 52% for the NSC mixes and 3 to 22% for the HSC mixes.

Inverted T-Beams in Structures: A Review

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

Performance and analysis of inverted T-beams have not been extensively studied. In this paper, in... more Performance and analysis of inverted T-beams have not been extensively studied. In this paper, information on the use of inverted T-bent caps are gathered. Existing technologies, web design guidelines for shear, and strengthening techniques are analyzed. Drawing from the collected literature, the use of fiber reinforced polymers (FRP) materials in inverted T-beams are still in their infancy, and recommendations for future work in this area are furnished in this study.

Flexural and shear performance of geopolymer concrete reinforced with hybrid glass fibers

Journal of building engineering, Aug 1, 2023

Numerical Modeling of Concrete Deep Beams Made with Recycled Aggregates and Steel Fibers

Buildings, Apr 21, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Nonlinear time-dependent analysis of externally/internally prestressed reinforced concrete beams

Behavior of beams with dowel action

Engineering Structures, Jun 1, 2007

... The dowel action behavior of the reinforcement bars crossing cracks in the concrete is analyz... more

Properties of Slag-Fly Ash Blended Geopolymer Concrete Reinforced with Hybrid Glass Fibers

Buildings, Jul 28, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Shear Strength of Steel Fiber-Reinforced Recycled Aggregates Concrete Deep Beams

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

The effectiveness of steel fibers to improve the shear behavior of recycled aggregates concrete d... more The effectiveness of steel fibers to improve the shear behavior of recycled aggregates concrete deep beams is investigated experimentally in this paper. Three large-scale concrete deep beams with a shear span-to-depth ratio (a/h) of 1.6 were tested. Two beams had a 100% recycled concrete aggregates (RCA) replacement ratio whereas one beam was made with natural aggregates (NA) to act as a benchmark. One of the RCA beams included steel fibers at a volume fraction of 1%. The use of a 100% RCA significantly impaired the beam stiffness, reduced the cracking load by 25%, and decreased the shear strength by 5%. The use of steel fibers in a RCA beam delayed initiation of shear cracks, improved the beam stiffness, and fully restored the original shear capacity.

On the Numerical Modelling of Steel Beams Strengthened by Purely Fastened FRP Sheets

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Mar 1, 2023

Strengthening of steel beams using fasteners was recently introduced by a few researchers to over... more Strengthening of steel beams using fasteners was recently introduced by a few researchers to overcome the undesirable debonding failure of the adhesively bonded FRP-steel beams. This paper investigates numerically the performance of steel beams strengthened by FRP sheets anchored using steel fasteners without a bonding agent. Detailed numerical models of fastened FRP-steel beams were developed using ANSYS software and verified against published experimental results. The calculated error between the experimental and numerical ultimate loads ranged from 2.6 to 10.2% proving the accuracy of the developed model. The verified model was used to evaluate the effectiveness of applying the fastening technique in enhancing the load capacity of FRP-steel beams subjected to one-point and two-point loads while adopting various FRP thicknesses of 3.175, 6.35 and 12.7 mm. Ultimate load improvements of 7.8, 20.2 and 25.8% were obtained for beams subjected to one-point load and fastened by the 3.175, 6.35 and 12.7 mm thick FRP sheets, respectively. Meanwhile, beams subjected to two-point loads showed 18.7, 21.5 and 25.2% enhancements in the ultimate load for the three thicknesses, respectively. Increasing the thickness of the FRP sheet boosted the ultimate load of the fastened FRP-steel beam; however, the ductility of the system was reduced.

Flexural Performance of Steel Beams Strengthened by Fastened Hybrid FRP Strips Utilizing Staggered Steel Bolts

Buildings, Dec 6, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

Early-Age Properties of Slag-Fly Ash Blended Geopolymer Concrete Reinforced with Glass Fibers – A Preliminary Study

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, Apr 1, 2022

This research investigates the effect of additional water content, glass fibers addition, glass f... more This research investigates the effect of additional water content, glass fibers addition, glass fiber length, and the handling time on the workability, 1-and 7-day compressive strength, and 7-day splitting tensile strength of slag-fly ash blended geopolymer concrete. The additional water content ranged from 0 to 100 kg/m 3. Two types of glass fibers were used with lengths of 24 and 43 mm and incorporated by up to 2 and 1.5%, by volume, respectively. Also, the handling time, representing the time from mixing to casting, was varied. The experimental results showed that the additional water content led to a significant increase in the slump and decrease in the 1-and 7-day compressive strengths of plain geopolymer concrete. A value of 75 kg/m 3 was required to attain a slump of 150 mm and 7-day compressive strength of 35 MPa. Furthermore, the addition of 24-mm long glass fibers reduced the slump and increased the compressive and splitting tensile strength by up to 23 and 40%, respectively, compared to the plain control mix. Longer glass fibers (43 mm) resulted in further slump loss and increase in the splitting tensile strength, while the compressive strength was unaffected. Extending the handling time led to lower workability and limited impact on the mechanical properties.

Experimental and Numerical Investigation of the Behavior of Steel Beams Strengthened by Bolted Hybrid FRP Composites

Buildings, Mar 21, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more

Performance of FRP-Steel Joints and FRP-Steel Beams Fastened by FRP Anchors

Proceedings of the 8th International Conference on Civil, Structural and Transportation Engineering (ICCSTE 2023)

This paper reports on the experimental results of utilizing anti-corrosive FRP anchors in FRP-ste... more This paper reports on the experimental results of utilizing anti-corrosive FRP anchors in FRP-steel joints and FRP-steel beams for strengthening purposes. The FRP anchors were introduced in replacement of the steel bolts typically used in the mechanical fastening methods of strengthening steel structures. FPR laminates were fastened to steel plates in a double-lap arrangement using 10 mm and 13 mm diameter FRP anchors without a bonding agent. The tested joints showed good bearing between the anchors and the fastened FRP laminates. FRP-steel joints fastened by the 10 mm diameter anchors experienced early shear fracture, risking the joints' ductility. Better ultimate load capacity, bearing and ductility were attained by utilizing the 13 mm anchors compared to the 10 mm anchors. The fastening technique was then implemented on full-scale steel beams by fastening the FRP laminates to the beams' bottom flange using the 13 mm FRP anchors. The flexural performance of the beams under two point loads was reported in view of the loaddeflection curves, observed failure modes and strain measurements. The strengthened beams showed good bearing between the anchors and the laminates before the fracture of the anchors occurred. The strengthened beams showed higher ultimate load capacity than the unstrengthened beams, opening the horizon for additional investigations on the utilization of FRP anchors in strengthening steel beams.

External Mitigating Technique for Progressive Collapse of Framed Structures

Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

Behavior of Shear-Critical Recycled Aggregate Concrete Beams Containing BFRP Reinforcement

Buildings

The shear performance of recycled aggregates beams reinforced with basalt fiber-reinforced polyme... more The shear performance of recycled aggregates beams reinforced with basalt fiber-reinforced polymer (BFRP) bars is evaluated and compared with that of similar beams made with natural aggregates (NA). Six beams with a shear span-to-effective depth ratio (a/d) of 3.0 were tested to failure. Test variables consisted of the recycled concrete aggregate (RCA) replacement percentage (60 and 100%) and the presence of BFRP stirrups in the shear span. Experimental results showed that a RCA replacement of 60% marginally reduced (5%) the shear capacity. However, the reduction in the shear capacity was more pronounced (17%) for the specimen made with 100% RCA. The contribution of BFRP stirrups to the shear capacity decreased with an increase in the RCA replacement percentage. The width of the major shear crack at a given value of load was higher for the beams with RCA. The deflection values at the ultimate load were greater for beams made with RCA. A codified analytical approach as well as a mode...

Flexural and shear performance of geopolymer concrete reinforced with hybrid glass fibers

Journal of Building Engineering

Flexural Performance of Steel Beams Strengthened by Fastened Hybrid FRP Strips Utilizing Staggered Steel Bolts

Buildings, Dec 6, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more