scholarly journals Deflection analysis of concrete beams prestressed with basalt fiber reinforced polymer bars subjected to cyclic loading

2019 ◽  
Author(s):  
Edgaras Atutis
Keyword(s):  
Cyclic Loading ◽  
Concrete Beams ◽  
Basalt Fiber ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Deflection Analysis ◽  
Basalt Fiber Reinforced Polymer

scholarly journals Serviceability and Flexural Behavior of Concrete Beams Reinforced with Basalt Fiber-Reinforced Polymer (BFRP) Bars Exposed to Harsh Conditions

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2110
Author(s):  
Hakem Alkhraisha ◽  
Haya Mhanna ◽  
Noor Tello ◽  
Farid Abed
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Basalt Fiber ◽  
Reinforcement Ratio ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Flexural Capacity ◽  
Reinforced Polymer ◽  
Basalt Fiber Reinforced Polymer

The main objective of this study was to investigate experimentally and numerically the behavior of basalt fiber-reinforced polymer (BFRP) reinforcement exposed to a combination of ultraviolet rays, humidity, and rain. Specifically, the effects of the previously stated harsh exposure on the serviceability performance and flexural capacity of BFRP reinforced concrete beams was examined. Holding the exposure parameter constant, the study also evaluated the effects of reinforcement ratio and beam detailing on the flexural capacity and the bond-dependent coefficient (kb) of the beams. Seven beams were cast and tested, four of which were reinforced with exposed BFRP bars, two were reinforced with unexposed BFRP bars, and one specimen was cast and reinforced with steel bars to serve as a benchmark specimen. The results indicate that the kb factor was averaged to be 0.61 for all the beams. Test results also indicate that increasing the reinforcement ratio did not result in a directly proportional increase in the moment capacity. The period of exposure did not cause any significant impact on the behavior of the over-reinforced beams. Thus, a finite element model was created to simulate the impact of exposure on the behavior of under-reinforced BFRP reinforced concrete beams.

Fiber-reinforced polymer plates for strengthening web opening in steel I-beams under cyclic loading

2019 ◽  
Vol 23 (2) ◽  
pp. 348-359
Author(s):  
Suzan AA Mustafa ◽  
Ebtsam Fathy ◽  
Mostafa S Rizk
Keyword(s):  
Carbon Fiber ◽  
Cyclic Loading ◽  
Basalt Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Web Opening ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced ◽  
Basalt Fiber Reinforced Polymer

This article is interested in finding the most appropriate strengthening scheme for web opening in steel I-beam under cyclic loading. Different opening shapes and locations were strengthened using two different fiber-reinforced polymer plates: carbon fiber–reinforced polymer and basalt fiber–reinforced polymer. A three-dimensional nonlinear finite element model was adopted using ANSYS program. The results showed that the high strength of carbon fiber–reinforced polymer plates helped the steel beam to recover its original strength; however, noticeable reduction was observed in beam ductility and in the number of inelastic excursions that took place before failure. Moreover, remarkable difference in stress concentration existed at the position of the carbon fiber–reinforced polymer plate edges. Under cyclic loading, fiber-reinforced polymer composites with low modulus of elasticity such as basalt fiber–reinforced polymer managed to eliminate these deficiencies using longer strengthening length. The most appropriate strengthening length and scheme for each opening case were outlined.

Sign in / Sign up

Export Citation Format

Share Document