Search Results - "Barros, Joaquim"

Unified model for fully and partially FRP confined circular and square concrete columns subjected to axial compression by Shayanfar, Javad, Barros, Joaquim A., Rezazadeh, Mohammadali

“…•A new methodology for unification of confinement model for circular and square concrete columns with full/partial confining system is…”
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A computational model for simulation of steel fibre reinforced concrete with explicit fibres and cracks by Carvalho, Marcelo R., Barros, Joaquim A.O., Zhang, Yuye, Dias-da-Costa, Daniel

“…A new formulation is herein proposed to embed discrete fibres and cracks in finite elements. The main features of the fibre behaviour are automatically…”
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Relation between fibre distribution and post-cracking behaviour in steel fibre reinforced self-compacting concrete panels by Abrishambaf, Amin, Barros, Joaquim A.O., Cunha, Vitor M.C.F.

“…In this research, the influence of the fibre distribution and orientation on the post-cracking behaviour of steel fibre reinforced self-compacting concrete…”
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Stress–Strain Model for FRP-Confined Circular Concrete Columns Developing Structural Softening Behavior by Shayanfar, Javad, Barros, Joaquim A. O., Rezazadeh, Mohammadali

“…Even though several stress–strain models have been proposed for fiber-reinforced polymer (FRP)-confined concrete columns subjected to axial compressive…”
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Analytical Model to Predict Dilation Behavior of FRP Confined Circular Concrete Columns Subjected to Axial Compressive Loading by Shayanfar, Javad, Rezazadeh, Mohammadali, Barros, Joaquim A

“…Abstract Experimental research and real-case applications are demonstrating that the use of fiber–reinforced polymer (FRP) composite materials can be a…”
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Direct assessment of tensile stress-crack opening behavior of Strain Hardening Cementitious Composites (SHCC) by Pereira, Eduardo B., Fischer, Gregor, Barros, Joaquim A.O.

“…The process of designing Strain Hardening Cementitious Composites (SHCC) is driven by the need to achieve certain performance parameters in tension. These are…”
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Design-Oriented Model of Unified Character to Determine Softening–Hardening Stress–Strain Behavior of FRP-Confined Concrete Columns of General Cross Section by Shayanfar, Javad, Barros, Joaquim A. O.

“…Abstract Even though many experimental studies have evidenced that fiber-reinforced polymer (FRP)-confined concrete columns under compression might exhibit a…”
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Integrated approach for the prediction of crack width and spacing in flexural FRC members with hybrid reinforcement by Taheri, Mahsa, Barros, Joaquim A.O., Salehian, Hamidreza

“…•A moment-rotation approach is developed to predict crack width and crack spacing of reinforced FRC elements failing in bending.•The post-cracking response of…”
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Generalized Analysis-oriented model of FRP confined concrete circular columns by Shayanfar, Javad, Barros, Joaquim A.O., Rezazadeh, Mohammadali

“…This study is dedicated to the development of a generalized confinement model applicable to circular concrete columns confined by FRP full and partial…”
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Unified Compressive Strength and Strain Ductility Models for Fully and Partially FRP-Confined Circular, Square, and Rectangular Concrete Columns by Shayanfar, Javad, Barros, Joaquim A. O., Abedi, Mohammadmahdi, Rezazadeh, Mohammadali

“…Determination of fiber-reinforced polymer (FRP) confinement-induced improvements in the mechanical properties of concrete columns under compression is a…”
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Seismic behaviour of precast sandwich wall panels of steel fibre reinforced concrete layers and fibre reinforced polymer connectors by Lameiras, Rodrigo, Barros, Joaquim A.O., Valente, Isabel B., Poletti, Elisa, Azevedo, Matilde, Azenha, Miguel

“…•The seismic behaviour of an innovative precast sandwich wall panel is accessed.•Results of in-plane cyclic tests on real scale precast sandwich wall panels…”
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An integrated approach for predicting the shear capacity of fibre reinforced concrete beams by Barros, Joaquim A.O., Foster, Stephen J.

“…•Integrated design approach for determining the shear capacity of flexurally reinforced SFRC members.•The approach considers fibre distribution profile, fibre…”
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Design Approach to Determine Shear Capacity of Reinforced Concrete Beams Shear Strengthened with NSM Systems by Baghi, Hadi, Barros, Joaquim A. O

“…AbstractThis paper presents a design approach to predict the shear capacity of RC beams strengthened with fiber reinforced polymer (FRP) laminates/rods applied…”
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Recycled Steel Fibre Reinforced Concrete failing in bending and in shear by Zamanzadeh, Ziaaddin, Lourenço, Lúcio, Barros, Joaquim

“…•Recycled Steel Fibres (RSF) provided effective shear reinforcement for RC beams.•Proper compositions assure an increase of post cracking resistance with RSF…”
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Analysis-oriented model for partially FRP-and-steel-confined circular RC columns under compression by Shayanfar, Javad, Barros, Joaquim A.O., Rezazadeh, Mohammadali

“…•A new methodology for the determination of FRP-steel dual confinement is introduced.•A new dilation model for partial confinement is proposed.•Consideration…”
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An interpretable machine learning-based model for shear resistance prediction of CFRP-strengthened RC beams using experimental and synthetic dataset by Mohammadi, Amirhossein, Barros, Joaquim A.O., Sena-Cruz, José

“…•Tabular Variational Auto-encoder was used to generate synthetic dataset.•Nine machine-learning algorithms were employed to predict the contribution of CFRP to…”
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Tensile stress–crack width law for steel fibre reinforced self-compacting concrete obtained from indirect (splitting) tensile tests by Abrishambaf, Amin, Barros, Joaquim A.O., Cunha, Vítor M.C.F.

“…In this work, mode I fracture parameters of steel fibre reinforced self-compacting concrete (SFRSCC) were derived from the numerical simulation of indirect…”
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Unified strength model for FRP confined heat-damaged circular and square concrete columns by Shayanfar, Javad, Kafshgarkolaei, Hassan Jafarian, Barros, Joaquim A.O., Rezazadeh, Mohammadali

“…•A new predictive model is proposed to calculate peak axial strength of FRP confined heat-damaged concrete.•A new methodology for reflecting the influence of…”
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Assessment of the performance of steel fibre reinforced self-compacting concrete in elevated slabs by Salehian, Hamidreza, Barros, Joaquim A.O.

“…The reinforcement mechanisms at the cross section level assured by fibres bridging the cracks in steel fibre reinforced self-compacting concrete (SFRSCC) can…”
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Analytical model to predict axial stress-strain behavior of heat-damaged unreinforced concrete columns wrapped by FRP jacket by Shayanfar, Javad, Barros, Joaquim A.O., Rezazadeh, Mohammadali

“…•A new methodology for the establishment of stress-strain relation of FRP confined heat-damaged concrete is introduced.•Predictive models to predict peak…”
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