Flexural performance evaluation of NSM basalt FRP-strengthened concrete beams using digital image correlation system

Daghash, Sherif M.; Ozbulut, Osman E.

doi:10.1016/j.compstruct.2017.06.021

Cited by 35 publications

(9 citation statements)

References 27 publications

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“…It was claimed that surface treatment with epoxy/sand mixture on the basalt bar subjected to harsh environments notably affected its bond strength and flexural strength due to strong cohesion bonding between cement and basalt bar [ 37 ]. The crack pattern in sand-coated or ribbed basalt fiber-reinforced polymer bars included vertically, diagonally and horizontally oriented cracking and was longer, but the steel bars had horizontal and minor diagonal cracks [ 38 , 39 ]. In addition, it was stated that basalt rebar-reinforced concrete beam showed better shear and flexural cracking compared to those of a steel rebar concrete beam [ 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Off-Axis Flexural Properties of Multiaxis 3D Basalt Fiber Preform/Cementitious Concretes: Experimental Study

Özdemir

Bilişik

2021

Materials

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Multiaxis three-dimensional (3D) continuous basalt fiber/cementitious concretes were manufactured. The novelty of the study was that the non-interlace preform structures were multiaxially created by placing all continious filamentary bundles in the in-plane direction of the preform via developed flat winding-molding method to improve the fracture toughness of the concrete composite. Principle and off-axis flexural properties of multiaxis three-dimensional (3D) continuous basalt fiber/cementitious concretes were experimentally studied. It was identified that the principle and off-axis flexural load-bearing, flexural strength and the toughness properties of the multiaxis 3D basalt concrete were extraordinarily affected by the continuous basalt filament bundle orientations and placement in the pristine concrete. The principle and off-axis flexural strength and energy absorption performance of the uniaxial (B-1D-(0°)), biaxial ((B-2D-(0°), B-2D-(90°) and B-2D-(+45°)), and multiaxial (B-4D-(0°), B-4D-(+45°) and B-4D-(−45°)) concrete composites were considerably greater compared to those of pristine concrete. Fractured four directional basalt concretes had regional breakages of the brittle cementitious matrix and broom-like damage features on the filaments, fiber-matrix debonding, intrafilament bundle splitting, and minor filament entanglement. Multiaxis 3D basalt concrete, particularly in the B-4D structure, controlled the crack phenomena and it was recognized as a more damage-tolerant material than the neat concrete.

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Section: Introductionmentioning

confidence: 99%

Off-Axis Flexural Properties of Multiaxis 3D Basalt Fiber Preform/Cementitious Concretes: Experimental Study

Özdemir

Bilişik

2021

Materials

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“…Thanks to this major advantage, DIC has been widely used for the experimental testing of composite solutions under different loading configurations [22] [29-31][32-34]. Data obtained by this method is commonly used for the evaluation of strain distribution, damage analysis and microstructure observation [22,29,34,35] and, to a lesser extent, as input for probabilistic analysis [36]. This approach, probabilistic analysis, is considered to be the most reliable strategy for numerical simulation of composite solutions [37] [38,39].…”

Section: Introductionmentioning

confidence: 99%

Digital image correlation and reliability-based methods for the design and repair of pressure pipes through composite solutions

García-Martín

López-Rebollo

Sánchez-Aparicio

et al. 2020

Construction and Building Materials

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This work aims to develop an approach for the reliability-based analysis for the design and repair of pressurized pipes by means of composite solutions. To this end, the approach uses a simulation method to estimate the failure probability of the solution based on the Monte Carlo approach and a Polynomial Chaos Expansion surrogate metamodeling strategy. This combination allows us to reduce the computational time required for evaluating the system´s probability of failure as well as extracting the Sobol' indices during the sensitivity analysis stage. The uncertainties related with the composite solution were obtained by means of the Digital Image Correlation approach, allowing us to extract the Probabilistic Distribution Functions (PDF) of its main mechanical parameters. This methodology is validated through the design and repair of a pressurized pipe using a carbon fiber solution and roll wrapping technology. The results show the strong potential of the proposed methodology for the safety evaluation of pressurized composite pipes.

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“…e failure modes of tested walls strengthened by BFRP sheets were different in a reference wall (without the presence of BFRP sheets) based on the experimental study submitted by Zhou et al [27]. Daghash and Ozbulut [28] investigated the flexural behaviour of RC beams reinforced with near-surface-mounted BFRP bars. e outcomes of this study indicated that the existence of BFRP bars worked to restore the original beam strength capacity and gave a more ductile behaviour.…”

Section: Introductionmentioning

confidence: 99%

Flexural Strengthening and Rehabilitation of Reinforced Concrete Beam Using BFRP Composites: Finite Element Approach

Kadhim

Numan

Özakça

2019

Advances in Civil Engineering

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Basalt fiber-reinforced polymer (BFRP) is adopted widely in recent years in many countries to rehabilitate or strengthen structural elements such as reinforced concrete (RC) beams because it is cheap and it has stellar mechanical performance. By activating the finite element (FE) simulation, the present research submits an extensive study on the strengthening and rehabilitation of damaged full-scale RC beams due to corrosions in the main reinforcement caused by BFRP sheets. Different parameters were taken into consideration such as corrosion grade, BFRP wrapping schemes, and the number of layers. The flexural performance of the models that build up as the control model and the damaged and the repaired methodologies by BFRP that are adopted and tested by others under the effects of four-point static loadings were also underwent examination. The full interaction at BFRP-concrete interface and the full bonding between sheets presupposed were investigated for all models. The numerical analysis findings were compared with the experimental measurements and found to be in good agreement. The current numerical analysis proved that the ultimate load rised by 14.8% in spite of 20% corrosion in the flexural steel rebar under eight layers of BFRP composite and bottom wrapping mode. In addition, under all strategies of wrapping schemes, the findings also indicated that the deflection ductility index noticeably reduced for RC beams with BFRP composites compared to the control beam. Finally, all the results of midspan deflection, crack patterns, and strain response of the composite system were analysed and discussed briefly.

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Flexural performance evaluation of NSM basalt FRP-strengthened concrete beams using digital image correlation system

Cited by 35 publications

References 27 publications

Off-Axis Flexural Properties of Multiaxis 3D Basalt Fiber Preform/Cementitious Concretes: Experimental Study

Off-Axis Flexural Properties of Multiaxis 3D Basalt Fiber Preform/Cementitious Concretes: Experimental Study

Digital image correlation and reliability-based methods for the design and repair of pressure pipes through composite solutions

Flexural Strengthening and Rehabilitation of Reinforced Concrete Beam Using BFRP Composites: Finite Element Approach

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