Database trends and critical review of seismic performance tests on high strength steel reinforced concrete components

Hassan, Wael M.; Elmorsy, Medhat

doi:10.1016/j.engstruct.2021.112092

Cited by 14 publications

(5 citation statements)

References 24 publications

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“…The ratio of characteristic ultimate strength to the characteristic yield strength (T/Y ratio) should be at least 1.05, 1.08, 1.15 for ductility classes A, B, and C, respectively. The T/Y ratio is mainly responsible for the distribution of plastic deformation over larger distance and avoiding local strain concentrations [24]. Larger T/Y ratios can increase member ductility by increasing the distance over which plastic deformations are distributed [24,25].…”

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

“…The T/Y ratio is mainly responsible for the distribution of plastic deformation over larger distance and avoiding local strain concentrations [24]. Larger T/Y ratios can increase member ductility by increasing the distance over which plastic deformations are distributed [24,25]. For batch I, all the tested 3D printed bar batches had T/Y ratios of more than 1.21, satisfying the requirements of ductility class C indicating good ductility properties of the rebars from the T/Y point of view.…”

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

“…Along with lower yield strength and high T/Y ratio, increasing the ultimate strain capacity can significantly affect reinforced concrete member ductility. Hassan and Elmorsy [24], based on parametric section analysis, showed that increasing the ultimate steel strain capacity increases the section ductility by up to 100%. Increasing the ultimate steel strain capacity from 0.05 to 0.10 yielded about 100% increase in section curvature ductility [24].…”

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

“…Hassan and Elmorsy [24], based on parametric section analysis, showed that increasing the ultimate steel strain capacity increases the section ductility by up to 100%. Increasing the ultimate steel strain capacity from 0.05 to 0.10 yielded about 100% increase in section curvature ductility [24]. For batch I, the tested rebars had high strain capacities ranging from 6.33% (0.4 mm plain rebar) to 14.06% (0.8 mm plain rebar) indicating high ductility and satisfying ductility class B (for the 0.4 mm plain rebar) and ductility class C (for other rebars) requirements.…”

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

See 3 more Smart Citations

Material Testing of Micro-Concrete and 3d-Printed Reinforcement for Use in Small-Scale Seismic Testing of Rc Structures

Elmorsy,

Wrobel,

Leinenbach

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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A framework for small scale modeling of RC structures that helps understanding their seismic behavior is discussed in this paper. The framework includes testing of small scale RC buildings manufactured using micro concrete and additively manufactured (3D printed) reinforcement cages on a shake table mounted on a geotechnical centrifuge. This paper presents material level testing of micro-concrete and 3D printed reinforcement that are to be used in the proposed framework. Mechanical properties of the 3D printed rebars are first discussed and compared to full scale rebar mechanical properties. A Concept Laser M2 Laser Powder Bed Fusion (LPBF) printer is used for printing the rebars. In addition, the compressive and tensile behavior of micro-concrete are studied using small scale cylinders and beams (for four-point bending tests), respectively. The results of this paper reveal that the mechanical properties of 3D printed submillimeter rebars can be adjusted by modulating the printing parameters. Moreover, concrete mechanical properties that are suitable for the discussed framework can be achieved.

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Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

Section: Tensile Test Of Reinforcing Barsmentioning

confidence: 99%

See 2 more Smart Citations

Material Testing of Micro-Concrete and 3d-Printed Reinforcement for Use in Small-Scale Seismic Testing of Rc Structures

Elmorsy,

Wrobel,

Leinenbach

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

show abstract

“…Some special considerations of manufacturing and detailing are necessary due to the enhanced ductility of the structural components under seismic excitations. Hassan and Elmorsy [ 11 ] conducted a comprehensive review of previous cyclic tests conducted on a range of high-strength reinforced concrete components, including columns, beams, beam-column joints, walls, and coupling beams. A comprehensive database was established and evaluated.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance and Nonlinear Strain Analysis of Mechanical Splices for High-Strength Reinforcement in Concrete Structures

et al. 2023

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This study investigates the strain development in reinforcing bars within the plastic hinge regions of beams and columns, with the main objective of modifying the current acceptance criteria for mechanical bar splices to accommodate high-strength reinforcement. The investigation utilizes numerical analysis based on moment–curvature and deformation analysis of typical beam and column sections in a special moment frame. The results indicate that the use of higher grade reinforcement, such as Grade 550 or 690, results in lower strain demands in the plastic hinge regions compared to Grade 420 reinforcement. To validate the modified seismic loading protocol, over 100 samples of mechanical coupling systems were tested in Taiwan. The test results demonstrate that the majority of these systems can successfully complete the modified seismic loading protocol and are suitable for use in critical plastic hinge regions of special moment frames. However, caution is advised for slender mortar-grouted coupling sleeves, as they were unable to fulfill the seismic loading protocols. These sleeves may be conditionally used in plastic hinge regions of precast columns, provided they meet specific conditions and demonstrate seismic performance through structural testing. The findings of this study offer valuable insight into the design and application of mechanical splices in high-strength reinforcement scenarios.

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Fresh and hardened properties of high-performance fiber-reinforced concrete containing fly ash and rice husk ash: Influence of fiber type and content

Dang²,

Nguyen³

et al. 2022

Front. Struct. Civ. Eng.

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Database trends and critical review of seismic performance tests on high strength steel reinforced concrete components

Cited by 14 publications

References 24 publications

Material Testing of Micro-Concrete and 3d-Printed Reinforcement for Use in Small-Scale Seismic Testing of Rc Structures

Material Testing of Micro-Concrete and 3d-Printed Reinforcement for Use in Small-Scale Seismic Testing of Rc Structures

Seismic Performance and Nonlinear Strain Analysis of Mechanical Splices for High-Strength Reinforcement in Concrete Structures

Fresh and hardened properties of high-performance fiber-reinforced concrete containing fly ash and rice husk ash: Influence of fiber type and content

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