Consideration of Critical Parameters for Improving the Efficiency of Concrete Structures Reinforced with FRP

Abstract

Fibre-reinforced polymer materials (FRP) are increasingly used to reinforce structural elements. Due to this, it is possible to increase the load-bearing capacity of polymer, wooden, concrete, and metal structures. In this article, the authors collected all the crucial aspects that influence the behaviour of concrete elements reinforced with FRP. The main types of FRP, their characterization, and their impact on the load-carrying capacity of a composite structure are discussed. The most significant aspects, such as type, number of FRP layers including fibre orientation, type of matrix, reinforcement of concrete columns, preparation of a concrete surface, fire-resistance aspects, recommended conditions for the lamination process, FRP laying methods, and design aspects were considered. Attention and special emphasis were focused on the description of the current research results related to various types of concrete reinforced with FRP composites. To understand which aspects should be taken into account when designing concrete reinforcement with composite materials, the main guidelines are presented in tabular form.

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

“…Of course, such tasks should be approached in a comprehensive manner, and building elements made of heavy concrete with various reinforcing elements should be evaluated as a system operating in conditions of a certain synergy [ 24 , 25 , 26 , 27 , 28 , 29 ]. Such synergy, as we have already established earlier, can be complex reinforcement, namely, fiber plus reinforcing bars, improved concrete characteristics due to their nanomodification or the same fiber reinforcement with fibers [ 30 , 31 , 32 , 33 , 34 ]. However, in addition to the above methods, it is also promising to create so-called differentiated building elements, particularly in their cross section [ 35 , 36 , 37 , 38 , 39 , 40 ].…”

“…Polymer composite reinforcement is mainly produced in the form of a rod with a spiral relief of any construction length made of glass or basalt fibers impregnated with a chemically resistant polymer [ 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ]. Polymer composite reinforcement is characterized by good mechanical properties—namely, high tensile strength—and physical properties—for example, lower density compared to steel reinforcement [ 21 , 22 , 26 , 27 , 31 , 32 , 36 ]. Fiberglass reinforcing bars are often used in structures subjected to a strong exposure to aggressive environments.…”

“…Mineral impregnated carbon fiber composites are a new type of reinforcement for construction. Compared to steel reinforcement, carbon fiber reinforcement has a much higher tensile strength and a significantly lower weight [ 22 , 24 , 31 , 33 , 35 , 38 , 39 , 41 , 42 , 43 , 44 , 47 , 49 , 51 , 55 , 59 ]. At present, the technology of reinforcing concrete bending elements with carbon fiber sheets is popular [ 44 , 59 ].…”

The Influence of Urtica dioica and Vitis vinifera Fibers on the Thermal Properties and Flammability of Polylactide Composites

“…It is anticipated that the value of this market will increase by over 60% by 2029 compared to its value in 2022 [ 1 , 2 ]. The increasing interest in polymer composites stems from the benefits derived from their properties, such as high tensile strength, a high Young’s modulus, a favorable strength-to-weight ratio, high resistance to chemical corrosion, and ease of assembly [ 3 ].…”

Dynamic Compression-Bending Performance of Concrete-Filled Steel Tubular Columns under Lateral Impact

“…Through a numerical parametric analysis, Gao et al [12] proposed the prediction formulas for the residual resistance of square CFST columns under repeated lateral impacts. In addition, FRP composites are supposed to provide benefits for the impact resistance of CFST columns [13,14].…”