bearing strength of cfrp confined concrete

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Bearing Strength of CFRP Confined Concrete

The externally bonded CFRP confinement signifi-cantly increased the bearing strength of concrete by up to 74%. Bearing strength of concrete is dependent upon the ratio of total surface area to bearing area by changing the state of transverse confinement of the concrete core.

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(PDF) Bearing strength of CFRP confined concrete

Results demonstrated that the bearing strength of concrete is increased by up to 74% through CFRP confine- ment. It was found the shape of the bearing area had marginal influence on the bearing strength of concrete. 1 INTRODUCTION tion is due to sliding action along planes that are in- clined to the direction of principal stresses.

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A model for ultimate bearing capacity of PVC-CFRP

2019-7-30  According to the mechanical experiment of materials, the average axial compressive strength of concrete was 24 MPa, and the average tensile strength of CFRP was 3903 MPa. The average elastic modulus of CFRP was 2.84 × 105 MPa, and the average ultimate strain of CFRP was 0.0137. The average tensile strength of PVC tube is 62 MPa.

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Strength of Bearing Area Confined by Fiber

2016-11-1  The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete

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BEARING STRENGTH OF CONFINED CONCRETE

2014-11-1  Concrete strengths ranged between 2700 and 6230 psi (18.6 and 42.9 MPa). Specimens were loaded with steel plates and the ratio of supporting area to bearing area was kept constant at 4. Strain measurements were made of the reinforcement to confirm steel yielding and at the surface of the concrete blocks to record first cracking load.

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Axial compressive performance of CFRP confined

The cube compressive strength of the C80 concrete reached 109.8 MPa after 240 days’ curing.

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Compressive behavior of CFRP-confined partially

2019-12-1  The formula of the axial bearing capacity (N u, F R P) of CFRP–confined partially encased concrete columns is expressed as (7) N u, F R P = φ (A a f a + 0.85 A c f cc ′ + A s f s) where φ is the buckling factor of column, which can be determined by Chinese Standard GB50017-2017 (2017) ; f cc ′ notes the compressive strength of FRP confined concrete.

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New formulation for compressive strength of CFRP

2009-10-30  This paper proposes a new approach for the formulation of compressive strength of carbon fiber reinforced plastic (CFRP) confined concrete cylinders using a promising variant of genetic programming (GP) namely, linear genetic programming (LGP). The LGP-based models are constructed using two different sets of input data. The first set of inputs comprises diameter of concrete cylinder ...

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CFRP约束钢管高强混凝土轴压短柱承载力的极限分析-Limit ...

2020-12-27  Abstract:To study the ultimate bearing capacity of carbon fiber reinforced polymer (CFRP) confined high-strength concrete filled steel tube stub columns under axial compression. The failure process working mechanism of CFRP confined high-strength concrete filled steel tube (CFRP confined steel tube- HSC) stub columns under axial compression was discussed.

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Effectiveness of FRP confinement on bearing strength

2020-3-14  Carbon Fibre Reinforced Polymers (CFRP) is successfully used to strengthen concrete members in compression, shear and flexure. This paper reports the results of an experimental study into the confinement efficiency of CFRP for bearing strength of steel fibre-reinforced concrete. The total area to bearing area ratio is maintained at 4.6.

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EFFECT OF SUBSTRATE PREPARATION ON THE LOAD

2021-1-16  concrete strength and stress-strain behavior. Therefore, an experimental study of carbon fiber reinforced polymer (CFRP) confined concrete cylinders with various substrate conditions and preparation methods is presented. The results are compared with previous investigations and assessed accordingly. Furthermore, recommendations

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Behaviour and capacity of CFRP-confined concrete

2007-8-4  The mechanical behaviour of concrete confined by carbon fibre reinforced polymer (CFRP) sheets is investigated in this study. Two series of tests were conducted on standard concrete cylinders with cube compressive strength ranging from 342 to 1041 MPa, confined by CFRP sheets with 234 GPa elastic modulus and volumetric ratio ranging between 045 and 135%.

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Effectiveness of CFRP Confinement and Compressive

Existing strength models for square concrete columns confined with fiber-reinforced polymer (FRP) laminates are almost all proposed on the basis of test data from relatively small-scale specimens. The possibility of extrapolating the models to represent the behavior of real

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Ultimate strength analysis of CFRP confined concrete

2019-12-2  This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.

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Strategies for concrete confinement with strips of CFRP

2018-3-23  The full wrap of the concrete col-umn with Carbon and Glass fiber reinforcement po-lymer (CFRP, GFRP) sheets is a general practice to increase the load bearing capacity, the ductility and the shear strength of this type of structural elements (CEB-FIB, 2001; Seible et al., 1997, Mirmiran e Shahawy, 1997; Untiveros, 2002).

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Structural Performance of High Strength Concrete

2012-5-23  tensile strength for this CFRP is 4300 MPa, with a tensile modulus of 238 GPa, an ultimate elongation of 18‰ and a Structural Performance of High Strength Concrete Columns Confined with CFRP Sheets N. Chikh, M. Gahmous, R. Benzaid Proceedings of the World Congress on Engineering 2012 Vol III WCE 2012, July 4 - 6, 2012, London, U.K.

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DEFORMATIONAL BEHAVIOUR OF FRP CONFINED

2020-3-14  FRP (CFRP) confined concrete columns, under moderate sustained stress/strength levels. 2. FRP CONFINEMENT TO CONCRETE COLUMNS Fibre reinforced polymer (FRP) confinement improves the strength and ductility of concrete columns in compression. The strength Improvement depends upon the fibre type, thickness and wrapping orientation (Lam and ...

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Analytical Model of Circular CFRP Confined Concrete

2008-10-6  This study intends to provide a simplified analytical model of the laterally confined concrete filled steel tube (CCFT) column system which adopts carbon-fiber-reinforced polymer (CFRP) jackets in order to make up for major defects of the traditional concrete filled steel tube (CFT) column system.

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Bearing strength and compressive strength of

2021-6-30  10.14.1 — Design bearing strength of concrete shall not exceed φ(0.85fc′A1), except when the supporting surface is wider on all sides than the loaded area, then the design bearing strength of the loaded area shall be permitted to be multiplied by (√A2/A1 ) but by not more than 2. If , φ is the strength reduction factor, in this case 0.65.

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PAPER OPEN ACCESS Bearing strength of concrete for ...

2020-4-5  CFRP confined concrete 50 × 150 × 150 1 Zhou et al. (2013) Reactive powder concrete reinforced by steel fibers 200 × 200 × 400 2 Bonetti et al. (2014) Confined concrete 203 × 203 × 406 2 aheight-to-width ratio lesser than 1 By referring to Table 1, majority of studies on the concrete bearing using the concrete blocks with

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Effectiveness of FRP confinement on bearing strength

2020-3-14  Carbon Fibre Reinforced Polymers (CFRP) is successfully used to strengthen concrete members in compression, shear and flexure. This paper reports the results of an experimental study into the confinement efficiency of CFRP for bearing strength of steel fibre-reinforced concrete. The total area to bearing area ratio is maintained at 4.6.

Get price

Behaviour and capacity of CFRP-confined concrete

2007-8-4  The mechanical behaviour of concrete confined by carbon fibre reinforced polymer (CFRP) sheets is investigated in this study. Two series of tests were conducted on standard concrete cylinders with cube compressive strength ranging from 342 to 1041 MPa, confined by CFRP sheets with 234 GPa elastic modulus and volumetric ratio ranging between 045 and 135%.

Get price

Experimental Behavior of Concrete Cylinders Confined

2009-8-7  Experimental Behavior of Concrete Cylinders Confined with CFRP Composites ... loads before failure and to provide an adequate bearing capacity. In the case of a seismic event, energy ... which include concrete strength, wrap thickness or number of FRP layers, and wrap angle orientation [5]. Many

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Ultimate strength analysis of CFRP confined concrete

2019-12-2  This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.

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Structural Performance of High Strength Concrete

2012-5-23  tensile strength for this CFRP is 4300 MPa, with a tensile modulus of 238 GPa, an ultimate elongation of 18‰ and a Structural Performance of High Strength Concrete Columns Confined with CFRP Sheets N. Chikh, M. Gahmous, R. Benzaid Proceedings of the World Congress on Engineering 2012 Vol III WCE 2012, July 4 - 6, 2012, London, U.K.

Get price

Strategies for concrete confinement with strips of CFRP

2018-3-23  The full wrap of the concrete col-umn with Carbon and Glass fiber reinforcement po-lymer (CFRP, GFRP) sheets is a general practice to increase the load bearing capacity, the ductility and the shear strength of this type of structural elements (CEB-FIB, 2001; Seible et al., 1997, Mirmiran e Shahawy, 1997; Untiveros, 2002).

Get price

Strategies for concrete confinement with strips of CFRP

2006-9-21  The full wrap of the concrete col-umn with Carbon and Glass fiber reinforcement polymer (CFRP, GFRP) sheets is a general practice to increase the load bearing capacity, the ductility and the shear strength of this type of structural ele-ments (CEB-FIB, 2001; Seible et al., 1997, Mir-miran e Shahawy, 1997; Untiveros, 2002). In spite

Get price

DEFORMATIONAL BEHAVIOUR OF FRP CONFINED

2020-3-14  FRP (CFRP) confined concrete columns, under moderate sustained stress/strength levels. 2. FRP CONFINEMENT TO CONCRETE COLUMNS Fibre reinforced polymer (FRP) confinement improves the strength and ductility of concrete columns in compression. The strength Improvement depends upon the fibre type, thickness and wrapping orientation (Lam and ...

Get price

Bearing strength and compressive strength of

2021-6-30  10.14.1 — Design bearing strength of concrete shall not exceed φ(0.85fc′A1), except when the supporting surface is wider on all sides than the loaded area, then the design bearing strength of the loaded area shall be permitted to be multiplied by (√A2/A1 ) but by not more than 2. If , φ is the strength reduction factor, in this case 0.65.

Get price
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