• Behavior of slender concrete columns ‎reinforced with GFRP ...

    Consequently, reinforcing slender RC columns with ‎the non-corrosive fiber-reinforced polymers (FRP) reinforcement extends the structure's ‎lifetime span and can eliminate the high repair and rehabilitation expenditures due to the ‎inevitable corrosion of conventional steel.

  • Experimental Investigation of Short and Slender ...

    In this paper, the experimental behavior of short and slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars under eccentric compression loading is presented. A total of 10 large-scale concrete column specimens with a rectangular cross section (205 × 306 mm) were tested under a single curvature condition with equal ...

  • Evaluation of Reinforced Concrete Columns under Biaxial ...

    data in slender columns at big scale, by performing similar studies, the existing problems can be eliminated. Keywords: sender reinforced concrete column, biaxial bending, finite elements analysis, Carbon Fiber Reinforced Polymers, Abaqus 1. Introduction

  • [PDF] Slender reinforced concrete columns strengthened ...

    Slender reinforced concrete columns strengthened with fibre reinforced polymers The requirement for a long life with relatively low maintenance costs relates to the use of building structures. Even though the structure is correctly designed, constructed and maintained, the need for extensions of its lifetime can appear. The preservation of the original structure with a higher level of ...

  • (PDF) Behavior of Slender GFRP Reinforced Concrete Columns

    Apr 24, 2019· The goal of this thesis was to investigate the behavior of short and slender concrete columns internally and externally reinforced with longitudinal fiber-reinforced …

  • Experimental Investigation of Short and Slender ...

    reinforcing concrete columns due to a lack of research data. However, the guideline is in the process of being converted into an accompanied code to ACI 318-19 (2019) for glass FRP (GFRP) reinforced concrete (GFRP-RC) members and the inclusion of both short and slender GFRP-RC concrete columns in under consideration.

  • EFFECT OF SLENDERNESS RATIO ON THE PERFORMANCE …

    columns bent in a single curvature, respectively. Hals et al. (2016) evaluated the behavior of slender (λ = 49) high-strength-concrete columns (concrete compressive strength of 90 MPa) reinforced with GFRP bars under eccentric and concentric loading. The short and slender columns …

  • SLENDER CONCRETE COLUMNS REINFORCED WITH FIBER …

    SLENDER CONCRETE COLUMNS REINFORCED WITH FIBER REINFORCED POLYMER SPIRALS by Thomas A. Hales A dissertation submitted to the faculty of The University of Utah in partial fulfillment of the requirements for the degree of Doctor of Philosophy Department of Civil and Environmental Engineering The University of Utah May 2015

  • CONFINEMENT MODEL FOR CONCRETE COLUMNS …

    following categories: (1) analysis of short and slender concrete columns with internal FRP reinforcement, (2) analysis of concrete columns subjected to corrosion with internal FRP reinforcement, and (3) evelopment of a stress-strain model for confined concrete with d FRP spirals.

  • A Comparative Study of the Performance of Slender ...

    Most reinforced concrete (RC) structures are constructed with square/rectangular columns. The cross-section size of these types of columns is much larger than the thickness of their partitions. Therefore, parts of these columns are protruded out of the partitions. The emergence of columns edges out of the walls has some disadvantages. This limitation is difficult to be overcome with square or ...

  • Behavior and design of slender FRP-confined circular RC ...

    Key words: FRP; concrete; confinement; slender columns; design . 1. Introduction Strengthening of reinforced concrete (RC) columns using fiber-reinforced polymer (FRP) jackets (or wraps) is now a widely accepted technique. This technique is particularly effective for circular columns as the strength and ductility of concrete in a

  • Chapter 4 Design of Slender Columns - Engineering

    Design of Slender Columns By Murat Saatcioglu1 4.1 Introduction The majority of reinforced concrete columns in practice are subjected to very little secondary stresses associated with column deformations. These columns are designed as short columns using the column …

  • (PDF) Slender reinforced concrete columns strengthened ...

    For slender columns, where provision is made for slenderness, the average increase in the resistance compression force beside a non-strengthened reinforced concrete column can be estimated as follows: 11.4% for columns strengthened by adding CFRP strips into the grooves in the concrete cover layer; 1.8% for columns strengthened by confinement ...

  • Behavior and Design of Slender Rectangular Concrete ...

    Mar 01, 2018· Fifteen slender rectangular reinforced concrete (RC) columns with longitudinal glass fiber-reinforced polymer (FRP) bars were tested under compression in this paper. Results showed that all columns with varying length-to-depth ratios and eccentricity ratios failed by concrete crushing, and no rupture of FRP bars was experienced.

  • Study on eccentric behavior and serviceability performance ...

    May 01, 2021· Behavior and Design of Slender Rectangular Concrete Columns Longitudinally Reinforced with Fiber-Reinforced Polymer Bars ACI Struct J, 115 ( 2 ) ( 2018 ), pp. 311 - 312 View Record in Scopus Google Scholar

  • ‪Koosha Khorramian‬ - ‪Google Scholar‬

    Short and Slender Concrete Columns Internally or Externally Reinforced with Longitudinal Fiber-Reinforced Polymer Composites. K Khorramian. 4: 2020: Second-Order Analysis of Slender GFRP Reinforced Concrete Columns using Artificial Neural Network. K Khorramian, P Sadeghian, F Oudah. CSCE Annual Conference, 2021. 1:

  • Fiber reinforced polymer(FRP) wrapped concrete columns

    Fiber reinforced polymer(FRP) wrapped concrete columns. When the outer surface of the column is coated with fiber reinforced polymer wrap, the transverse expansion of the concrete causes tensile stress of the outer FRP wrap, and the carbon wrap in turn imposes restraints on the concrete to prevent its expansion, so that the concrete is in a three-dimensional state of stress, thus improving the ...

  • Behavior of Slender GFRP Reinforced Concrete Columns

    This paper presents an experimental and analytical study on slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars. The experimental program included ten concrete columns with rectangular cross-section (203 × 305 mm) where nine of them were reinforced with #6 GFRP bars and one of them was reinforced with steel rebars.

  • Impact and Performance of Linen Fiber Reinforced Concrete ...

    Impact and Performance of Linen Fiber Reinforced Concrete in Slender Columns Ashraf Milad 1 1 Department of Civil Engineering, University of Bani Walied. Bani Walied City, Libya. ABSTRACT: This study was consisted of two phases, revealed the behavior of Self-Compacting Concrete (SCC) specimens of small-diameter slender column to achieve high ...

  • NUMERICAL ANALYSIS OF PLAIN AND STEEL FIBER …

    Eltobgy [9], observed that the use of steel fibre reinforced concrete improved the structural stability of a CFST columns and the slenderness ratio is also an important factor that govern its behaviour. Gopal and Manoharan [10], carried out tests on 12 slender circular steel tubular columns filled with both plain and steel fiber reinforced ...

  • Slender RC Columns Strengthened with a Novel Hybrid ...

    The novelty of the hybrid system is to improve the load-carrying capacity of slender steel-reinforced concrete (RC) columns under eccentric axial compression by providing high modulus longitudinal carbon FRP (CFRP) laminates through enhancing the flexural stiffness of the slender column and to laterally support the longitudinal laminates by FRP ...

  • Axial behavior of carbon fiber-reinforced polymer–confined ...

    Jul 19, 2021· compression, concrete-filled steel tube, fiber-reinforced polymer, recycled aggregate concrete, slender square column References Ahmed, M, Ci, J, Yan, X-F, et al. ( 2021 ) Numerical modeling of axially loaded circular concrete-filled double-skin steel tubular short columns incorporating a new concrete confinement model .

  • INVESTIGATION OF RECTANGULAR CONCRETE COLUMNS …

    Mar 23, 2005· concrete columns reinforced with FRP, in some instances, gained significant moment resistance. As expected the strength interaction of slender steel or FRP reinforced concrete columns were dependent more on column length rather than material differences between steel and FRP.

  • DESIGN OF SLENDER CONCRETE COLUMNS …

    In this paper, the experimental behavior of short and slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars under eccentric compression loading is presented.

  • STRENGTHENING SLENDER CIRCULAR CONCRETE …

    hybrid system of longitudinal bonded fiber-reinforced polymer (FRP) prefabricated laminates and transverse FRP wraps is investigated. The idea is to improve the axial load carrying capacity of slender concrete columns by providing high modulus longitudinal carbon …

  • [PDF] Experimental Investigation of Short and Slender ...

    DOI: 10.1061/(ASCE)CC.1943-5614.0001088 Corpus ID: 224461433. Experimental Investigation of Short and Slender Rectangular Concrete Columns Reinforced with GFRP Bars under Eccentric Axial Loads

  • STRUCTURE magazine | Design of Slender Concrete Columns

    The majority of the current provisions on slender column design first appeared in the 1971 version of ACI 318 as a result of the recommendations of ACI-ASCE Committee 441, Reinforced Concrete Columns. At the time, the new provisions allowed for the use of structural analysis methods made available with the advent of computer analysis software ...

  • Second-order Analysis of Slender GFRP Reinforced Concrete ...

    Analysis of slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars is required for design and optimization purposes. Finite element, finite difference, and analytical-numerical tools were developed in literature to accurately predict the response of slender columns reinforced …

  • Behavior of slender concrete columns ‎reinforced with GFRP ...

    Consequently, reinforcing slender RC columns with ‎the non-corrosive fiber-reinforced polymers (FRP) reinforcement extends the structure's ‎lifetime span and can eliminate the high repair and rehabilitation expenditures due to the ‎inevitable corrosion of conventional steel.

  • Experimental Investigation of Short and Slender ...

    In this paper, the experimental behavior of short and slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars under eccentric compression loading is presented. A total of 10 large-scale concrete column specimens with a rectangular cross section (205 × 306 mm) were tested under a single curvature condition with equal ...

  • Evaluation of Reinforced Concrete Columns under Biaxial ...

    data in slender columns at big scale, by performing similar studies, the existing problems can be eliminated. Keywords: sender reinforced concrete column, biaxial bending, finite elements analysis, Carbon Fiber Reinforced Polymers, Abaqus 1. Introduction

  • [PDF] Slender reinforced concrete columns strengthened ...

    Slender reinforced concrete columns strengthened with fibre reinforced polymers The requirement for a long life with relatively low maintenance costs relates to the use of building structures. Even though the structure is correctly designed, constructed and maintained, the need for extensions of its lifetime can appear. The preservation of the original structure with a higher level of ...

  • (PDF) Behavior of Slender GFRP Reinforced Concrete Columns

    Apr 24, 2019· The goal of this thesis was to investigate the behavior of short and slender concrete columns internally and externally reinforced with longitudinal fiber-reinforced …

  • Experimental Investigation of Short and Slender ...

    reinforcing concrete columns due to a lack of research data. However, the guideline is in the process of being converted into an accompanied code to ACI 318-19 (2019) for glass FRP (GFRP) reinforced concrete (GFRP-RC) members and the inclusion of both short and slender GFRP-RC concrete columns in under consideration.

  • EFFECT OF SLENDERNESS RATIO ON THE PERFORMANCE …

    columns bent in a single curvature, respectively. Hals et al. (2016) evaluated the behavior of slender (λ = 49) high-strength-concrete columns (concrete compressive strength of 90 MPa) reinforced with GFRP bars under eccentric and concentric loading. The short and slender columns …

  • SLENDER CONCRETE COLUMNS REINFORCED WITH FIBER …

    SLENDER CONCRETE COLUMNS REINFORCED WITH FIBER REINFORCED POLYMER SPIRALS by Thomas A. Hales A dissertation submitted to the faculty of The University of Utah in partial fulfillment of the requirements for the degree of Doctor of Philosophy Department of Civil and Environmental Engineering The University of Utah May 2015

  • CONFINEMENT MODEL FOR CONCRETE COLUMNS …

    following categories: (1) analysis of short and slender concrete columns with internal FRP reinforcement, (2) analysis of concrete columns subjected to corrosion with internal FRP reinforcement, and (3) evelopment of a stress-strain model for confined concrete with d FRP spirals.

  • A Comparative Study of the Performance of Slender ...

    Most reinforced concrete (RC) structures are constructed with square/rectangular columns. The cross-section size of these types of columns is much larger than the thickness of their partitions. Therefore, parts of these columns are protruded out of the partitions. The emergence of columns edges out of the walls has some disadvantages. This limitation is difficult to be overcome with square or ...

  • Behavior and design of slender FRP-confined circular RC ...

    Key words: FRP; concrete; confinement; slender columns; design . 1. Introduction Strengthening of reinforced concrete (RC) columns using fiber-reinforced polymer (FRP) jackets (or wraps) is now a widely accepted technique. This technique is particularly effective for circular columns as the strength and ductility of concrete in a

  • Chapter 4 Design of Slender Columns - Engineering

    Design of Slender Columns By Murat Saatcioglu1 4.1 Introduction The majority of reinforced concrete columns in practice are subjected to very little secondary stresses associated with column deformations. These columns are designed as short columns using the column …

  • (PDF) Slender reinforced concrete columns strengthened ...

    For slender columns, where provision is made for slenderness, the average increase in the resistance compression force beside a non-strengthened reinforced concrete column can be estimated as follows: 11.4% for columns strengthened by adding CFRP strips into the grooves in the concrete cover layer; 1.8% for columns strengthened by confinement ...

  • Behavior and Design of Slender Rectangular Concrete ...

    Mar 01, 2018· Fifteen slender rectangular reinforced concrete (RC) columns with longitudinal glass fiber-reinforced polymer (FRP) bars were tested under compression in this paper. Results showed that all columns with varying length-to-depth ratios and eccentricity ratios failed by concrete crushing, and no rupture of FRP bars was experienced.

  • Study on eccentric behavior and serviceability performance ...

    May 01, 2021· Behavior and Design of Slender Rectangular Concrete Columns Longitudinally Reinforced with Fiber-Reinforced Polymer Bars ACI Struct J, 115 ( 2 ) ( 2018 ), pp. 311 - 312 View Record in Scopus Google Scholar

  • ‪Koosha Khorramian‬ - ‪Google Scholar‬

    Short and Slender Concrete Columns Internally or Externally Reinforced with Longitudinal Fiber-Reinforced Polymer Composites. K Khorramian. 4: 2020: Second-Order Analysis of Slender GFRP Reinforced Concrete Columns using Artificial Neural Network. K Khorramian, P Sadeghian, F Oudah. CSCE Annual Conference, 2021. 1:

  • Fiber reinforced polymer(FRP) wrapped concrete columns

    Fiber reinforced polymer(FRP) wrapped concrete columns. When the outer surface of the column is coated with fiber reinforced polymer wrap, the transverse expansion of the concrete causes tensile stress of the outer FRP wrap, and the carbon wrap in turn imposes restraints on the concrete to prevent its expansion, so that the concrete is in a three-dimensional state of stress, thus improving the ...

  • Behavior of Slender GFRP Reinforced Concrete Columns

    This paper presents an experimental and analytical study on slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars. The experimental program included ten concrete columns with rectangular cross-section (203 × 305 mm) where nine of them were reinforced with #6 GFRP bars and one of them was reinforced with steel rebars.

  • Impact and Performance of Linen Fiber Reinforced Concrete ...

    Impact and Performance of Linen Fiber Reinforced Concrete in Slender Columns Ashraf Milad 1 1 Department of Civil Engineering, University of Bani Walied. Bani Walied City, Libya. ABSTRACT: This study was consisted of two phases, revealed the behavior of Self-Compacting Concrete (SCC) specimens of small-diameter slender column to achieve high ...

  • NUMERICAL ANALYSIS OF PLAIN AND STEEL FIBER …

    Eltobgy [9], observed that the use of steel fibre reinforced concrete improved the structural stability of a CFST columns and the slenderness ratio is also an important factor that govern its behaviour. Gopal and Manoharan [10], carried out tests on 12 slender circular steel tubular columns filled with both plain and steel fiber reinforced ...

  • Slender RC Columns Strengthened with a Novel Hybrid ...

    The novelty of the hybrid system is to improve the load-carrying capacity of slender steel-reinforced concrete (RC) columns under eccentric axial compression by providing high modulus longitudinal carbon FRP (CFRP) laminates through enhancing the flexural stiffness of the slender column and to laterally support the longitudinal laminates by FRP ...

  • Axial behavior of carbon fiber-reinforced polymer–confined ...

    Jul 19, 2021· compression, concrete-filled steel tube, fiber-reinforced polymer, recycled aggregate concrete, slender square column References Ahmed, M, Ci, J, Yan, X-F, et al. ( 2021 ) Numerical modeling of axially loaded circular concrete-filled double-skin steel tubular short columns incorporating a new concrete confinement model .

  • INVESTIGATION OF RECTANGULAR CONCRETE COLUMNS …

    Mar 23, 2005· concrete columns reinforced with FRP, in some instances, gained significant moment resistance. As expected the strength interaction of slender steel or FRP reinforced concrete columns were dependent more on column length rather than material differences between steel and FRP.

  • DESIGN OF SLENDER CONCRETE COLUMNS …

    In this paper, the experimental behavior of short and slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars under eccentric compression loading is presented.

  • STRENGTHENING SLENDER CIRCULAR CONCRETE …

    hybrid system of longitudinal bonded fiber-reinforced polymer (FRP) prefabricated laminates and transverse FRP wraps is investigated. The idea is to improve the axial load carrying capacity of slender concrete columns by providing high modulus longitudinal carbon …

  • [PDF] Experimental Investigation of Short and Slender ...

    DOI: 10.1061/(ASCE)CC.1943-5614.0001088 Corpus ID: 224461433. Experimental Investigation of Short and Slender Rectangular Concrete Columns Reinforced with GFRP Bars under Eccentric Axial Loads

  • STRUCTURE magazine | Design of Slender Concrete Columns

    The majority of the current provisions on slender column design first appeared in the 1971 version of ACI 318 as a result of the recommendations of ACI-ASCE Committee 441, Reinforced Concrete Columns. At the time, the new provisions allowed for the use of structural analysis methods made available with the advent of computer analysis software ...

  • Second-order Analysis of Slender GFRP Reinforced Concrete ...

    Analysis of slender concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars is required for design and optimization purposes. Finite element, finite difference, and analytical-numerical tools were developed in literature to accurately predict the response of slender columns reinforced …