1,721,034 research outputs found
Dataset for Journal Paper "Wound FRP Shear Reinforcement for Concrete Structures"
Full text linkThe Dataset contains the following files:
- ‘Tensile tests wet layup’
- ‘Tensile tests prepreg’
- ‘Stirrups tests’
- ‘Flexural tests
Indagine sperimentale sul comportamento post-fessurazione di travi di calcestruzzo armate con barre di FRP
No full textFlexural behavior of natural fiber-reinforced foamed concrete beams
No full textClimate change has become a worldwide problem, and many conventional construction materials contribute to carbon emissions. Therefore, the need for sustainable infrastructure has progressed with the increasing use of various plant-based natural fibers for structural applications. This study assesses the feasibility and performance of using natural fiber rope-based reinforcement in foamed concrete structures. The flexural behavior of foamed concrete beams reinforced with the roselle fiber rope-based reinforcement is investigated using finite element (FE) analysis-based numerical and code-based simplified analytical approaches. In the FE model, beams are discretized along the length and depth with a multi-fiber model approach. The nonlinear constitutive behavior of the concrete is taken as per the design standards, and the material properties of natural fiber-based reinforcement, i.e., roselle fiber and roselle fiber rope, are obtained experimentally. The bond-slip behavior between reinforcement and concrete is also implemented using Eligehausen’s law. Furthermore, the influence of the elastic modulus of the reinforcement, span length, and reinforcement ratio on the flexural capacity and deflection of the beams is investigated. The study provides an understanding of roselle fibers and roselle fiber rope in terms of tensile strengths and stiffness to explore their suitability as reinforcement materials. Moreover, it is shown that roselle fiber rope-based reinforcement increases the load-carrying capacity of reinforced foamed concrete beams by approximately 90% (depending upon the elastic modulus of the reinforcement) compared to plain foamed concrete beams. This significant improvement underscores the potential of roselle fiber ropes as an alternative to steel or synthetic fiber-based reinforcement in concrete beams subjected to relatively low-magnitude loads, providing a clear conclusion and recommendation based on the findings of the study.</p
Buckling behavior of curved composite beams with different elastic response in tension and compression
Full text linkA geometrically nonlinear finite element model of a composite curved beam is presented, accounting for moderately large rotations of the cross-sections, moderately large shear strains, small axial strains, and different elastic response of the material in tension and compression (bimodular behavior). A path following procedure in displacement control is employed to compute the stability points and the post- buckling response of the given model. Several comparisons are established with different numerical approaches available in the literature, showing the accuracy of the proposed finite element scheme in the unimodular case. Some original results on the in-plane and out-of-plane buckling of bimodular arches highlight that the post-buckling response of such structures is strongly influenced by the ratios between tensile and compressive moduli
Buckling and post-buckling behavior of curved composite beams accounting for different response in tension and compression
No full textComportamento in condizioni di esercizio di travi di conglomerato cementizio armate con barre di FRP
No full textAnalisi sperimentale sul comportamento in esercizio di travi di conglomerato cementizio armato con barre di FRP
No full textTravi di conglomerato cementizio armate con barre di FRP. Stato limite di esercizio
No full textThe paper presents some of the results from a large experimental program undertaken at the Department of Civil Engineering of Salerno University. The static behavior under service conditions of FRP reinforced concrete beams is tested under four point bending. Within the whole experimental program, concerning forty beams, different FRP fiber types, concrete strengths and longitudinal reinforcement ratios are taken into consideration. The final aim is to
investigate both deflections at midspan and crack widths. Moreover, the ultimate behavior up to failure is also investigated
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