A Review of Fibre Reinforced Polymer Structures

Abstract

This paper reviews Fibre Reinforced Polymer (FRP) composites in Civil Engineering applications. Three FRP types are used in Structural Engineering: FRP profiles for new construction, FRP rebars and FRP strengthening systems. Basic materials (fibres and resins), manufacturing processes and material properties are discussed. The focus of the paper is on all-FRP new-build structures and their joints. All-FRP structures use pultruded FRP profiles. Their connections and joints use bolting, bonding or a combination of both. For plate-to-pate connections, effects of geometry, fibre direction, type and rate of loading, bolt torque and bolt hole clearance, and washers on failure modes and strength are reviewed. FRP beam-columns joints are also reviewed. The joints are divided into five categories: web cleated, web and flange cleated, high strength, plate bolted and box profile joints. The effect of both static and cyclic loading on joints is studied. The joints’ failure modes are also discussed.

Theoretical and Experimental Substantiation of the Efficiency of Combined-Reinforced Glass Fiber Polymer Composite Concrete Elements in Bending

“…Finally, from a price point of view, the cost of our elements is reduced and is more economical, as confirmed by our economic analysis. This is in good agreement with the results of the authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]35,[37][38][39][40][41][42][43][44][45][46][47][48][49][50].…”

“…Finally, the works of the authors involved in the study of polymer composite concrete bending elements (beams) [2,5,8,[11][12][13]15,16,35,[37][38][39][40][41][42][43][44][45][46][47][48][49][50] were of particular interest for the development of this study. To improve the performance of bending elements, researchers studied the following for their reinforcement: fiber-reinforced polymers (FRP), glassreinforced polymers (GFRP), composite polymers, reinforcement with jute-polyester fiber (JPFRP), polymers, reinforcement with basalt fiber (BFRP), carbon (CFRP) and aramid (AFRP) fibers.…”

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.…”

Physical Properties of Glass-Fibre-Reinforced Polymer Filled with Alumina Trihydrate and Calcium Carbonate

“…Construction materials in civil engineering have commonly relied on modern materials, one of which is the glass-fibre-reinforced polymer (GFRP) composite material [6][7][8][9][10][11]. One of the products made of GFRP is gutters, which are usually manufactured with a thickness of three millimetres and a length of six metres [12].…”