Structural Behavior of High-Strength Concrete Slabs Reinforced with GFRP Bars

Abstract

In this manuscript, structural testing was conducted on high-strength concrete slab specimens to investigate the behavior of such specimens when reinforced with a locally produced GFRP reinforcement. Subsequently, a finite element model (FEM) was constructed and validated against the experimental results. In the experimental phase, a total of eleven specimens (nine were reinforced with GFRP, while two were reinforced with conventional steel) were constructed and tested. The slabs dimensions are 700 mm × 1750 mm with variable thickness from 100 mm to 150 mm and different reinforcement ratios using different diameters. The structural behavior of the tested slabs was investigated in terms of ultimate load, ultimate deflection, load–deflection relationship, and crack pattern. Additionally, a nonlinear finite element model using the software ANSYS 2019-R1 was constructed to simulate the structural behavior of slabs reinforced with GFRP bars. The results obtained from the finite element analysis are compared with experimental results. The outcomes showed that the contribution of GFRP rebars in concrete slabs improved slab ductility and exhibited higher deflection when compared with traditional steel rebars. Good agreement between experimental and nonlinear analysis was obtained.

Numerical Simulation of the Bearing Capacity of Variotropic Short Concrete Beams Reinforced with Polymer Composite Reinforcing Bars

“…In this case, an increase in beam deflection was also observed [ 6 ]. An important factor of the study is the possibility, due to the proposed technology of imparting a variotropic structure, to reduce the deflection of bending elements with fiberglass reinforcement (glass composite and basalt composite), which, in turn, significantly increases the deflection in comparison with steel reinforcement [ 8 , 28 ].…”

“…It should be noted that reinforced concrete, with all its advantages, also has several disadvantages, which are expressed in the high cost of raw materials, such as reinforcing steel, and the large weight of the created structures, products and buildings [ 7 , 8 , 9 , 10 , 11 , 12 ]. All this leads to the fact that modern scientists and engineers are developing, with a certain degree of success, new types of reinforcing elements, such as polymer composite reinforcement, which makes it possible to successfully solve the abovementioned tasks and problems [ 13 , 14 , 15 , 16 , 17 ].…”

“…This condition indicates the importance of the process of designing bending elements reinforced with fiberglass reinforcement, considering both bending and shear. So, for example, in several works [ 7 , 8 , 10 , 16 , 30 , 45 ], the authors, through experimental studies and calculations, developed and proposed new recommendations for calculating the shear strength of beams longitudinally reinforced with fiberglass reinforcement. Oller at al.…”

Influence on the Flexural Behaviour of High-Volume Fly-Ash-Based Concrete Slab Reinforced with Sustainable Glass-Fibre-Reinforced Polymer Sheets

“…The modelling of the slab specimens was performed via a geometry design modeller in the ANSYS Workbench 2022-R1. The effect of crack pattern, stress, strain, ultimate load, ultimate deflection and displacement of concrete with different types of end conditions could be analysed in the ANSYS [40][41][42]. Geometry with the support conditions and load points of application and 3D meshed modelling of the slab specimen are shown in Figure 20.…”

Experimental investigation of innovative reinforcement method for two‐way concrete slabs using perforated steel plates

“…Various reinforcement methods are used for concrete slabs. [1][2][3][4][5][6][7][8][9][10][11][12] Reinforced concrete members can become more efficient and cost-effective by improving steel performance. In some studies, profiled steel sheets have been used as an alternative to tensile reinforcements.…”