Flexural experimental study on continuous reinforced concrete beams strengthened with basalt fiber reinforced polymer/plastic

2012 ◽  
Vol 17 (5) ◽  
pp. 613-618 ◽  
Author(s):  
Li-jun Ouyang ◽  
Zhou-dao Lu ◽  
Wei-zhen Chen
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Basalt Fiber ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
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.

Behavior of RC box beam strengthened with basalt FRP using end anchorage with grooving

2019 ◽  
Vol 53 (23) ◽  
pp. 3307-3324 ◽  
Author(s):  
Dejian Shen ◽  
Xuan Zeng ◽  
Jinyang Zhang ◽  
Baizhong Zhou ◽  
and Wei Wang
Keyword(s):  
Reinforced Concrete ◽  
Failure Mode ◽  
Basalt Fiber ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Box Beam ◽  
Average Crack ◽  
Basalt Fiber Reinforced Polymer

In recent days, many structures are strengthened with fiber-reinforced polymer to make use of the existing reinforced concrete structures to the current needs. Although investigations on the behavior of undamaged fiber-reinforced polymer-strengthened reinforced concrete beams anchored with U-strips have been conducted, study on the behavior of RC box beams strengthened with basalt fiber-reinforced polymer using end anchorage with grooving is still lacking. In the present study, the failure mode, ductility, stiffness, and loading-carrying capacity of an RC box beam strengthened with basalt fiber-reinforced polymer using end anchorage with grooving were experimentally and analytically investigated. Test results and analysis showed that: (1) the average crack spacing, average crack depth, and average crack width of specimen anchored with grooving decreased by 10.3%, 2.8%, and 6.2% when compared with that of specimen anchored with U-strips, respectively; (2) the failure mode of specimen anchored with grooving was basalt fiber-reinforced polymer debonding in pure bending zone; (3) the deflection or curvature ductility of specimen anchored with grooving was 33.9% or 32.7% lower than that of specimen anchored with U-strips; (4) a model based on built-up bars for the load-carrying capacities of BFRP-strengthened beams anchored with grooving was proposed.

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