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"Performance evaluation of normal- and high-strength concrete column sp" by Hayder Alaa Hasan, Hogr Karim et al.

Glass fibre-reinforced polymer (GFRP) bars, as reinforcement in concrete structures, have several desirable properties over conventional steel bars, such as high tensile strength, low density and resistance to corrosion. However, there are still some concerns about using GFRP bars as longitudinal reinforcement in concrete columns primarily due to their low compressive strength and low modulus of elasticity. It is evident that the compressive behaviour of GFRP bars as longitudinal reinforcement in normal strength concrete (NSC) and high strength concrete (HSC) columns has not been extensively investigated to formulate adequate design guidelines. In this study, 12 reinforced concrete column specimens were tested under concentric compression loading. All the tested column specimens were 600 mm in height and 154 mm in diameter. The column specimens were divided into two groups as per the compressive strength of the concrete used in casting the column specimens, which were 45 MPa and 90 MPa ....

Circular Concrete Columns , Concentric Axial Load , Frp Bars ,

"Experimental investigation on the use of glass fiber reinforced polyme" by Habil Ahmad, M. Neaz Sheikh et al.

This paper presents the results of an experimental investigation on the behavior of glass fiber reinforced polymer (GFRP) bar-reinforced hollow-core (GFRP-HC) circular concrete specimens under concentric, 25 mm and 50 mm eccentric axial loading and four-point bending. The main parameters investigated include the type of reinforcing bars, pitch of the helices and loading conditions. The test matrix of this study consists of 12 specimens, among which nine specimens (850 mm high) were tested under concentric and eccentric axial loading and the remaining three specimens (1500 mm long) were tested under four-point bending. The specimens were circular in cross-section with an outer diameter of 214 mm and an inner circular hole diameter of 56 mm. The experimental results showed that, for the similar amount of reinforcement, steel bar-reinforced hollow-core (steel-HC) specimens sustained higher loads than the GFRP-HC specimens under different loading conditions. Also, the steel-HC specimens ac ....

Concentric Axial Load , Ccentric Axial Load , Lass Fiber Reinforced Polymer Bar , Lass Fiber Reinforced Polymer Helix , Ollow Core Columns , Reinforced Concrete ,