Durability and Mechanical Properties of Concrete Reinforced with Basalt Fiber-Reinforced Polymer (BFRP) Bars: Towards Sustainable Infrastructure

Abstract

Reducing the fingerprint of infrastructure has become and is likely to continue to be at the forefront of stakeholders’ interests, including engineers and researchers. It necessary that future buildings produce minimal environmental impact during construction and remain durable for as long as practicably possible. The use of basalt fiber-reinforced polymer (BFRP) bars as a replacement for carbon steel is reviewed in this article by examining the literature from the past two decades with an emphasis on flexural strength, serviceability, and durability. The provisions of selected design and construction guides for flexural members are presented, compared, and discussed. The bond of BFRP bars to the surrounding concrete was reportedly superior to carbon steel when BFRP was helically wrapped and sand coated. Experimental studies confirmed that a bond coefficient kb = 0.8, which is superior to carbon steel, may be assumed for sand-coated BFRP ribbed bars that are helically wrapped, as opposed to the conservative value of 1.4 suggested by ACI440.1R-15. Code-based models overestimate the cracking load for BFRP-reinforced beams, but they underestimate the ultimate load. Exposure to an alkaline environment at temperatures as high as 60 °C caused a limited reduction in bond strength of BFRP. The durability of BFRP bars is influenced by the type of resin and sizing used to produce the bars.

Characterization of the Static, Creep, and Fatigue Tensile Behavior of Basalt Fiber/Polypropylene Composite Rods for Passive Concrete Reinforcement

“…Epoxy-coating carbon steel and stainless steel reinforcing products are obvious alternatives, but fiber-reinforced polymer (FRP) composites are becoming more frequently adopted as so-called “corrosion-resistant” concrete reinforcement materials due to their excellent mechanical properties, low density, and resistance to galvanic corrosion [ 4 , 5 , 6 , 7 , 8 ]. Numerous studies on FRP for structural reinforcement are reported every year, covering topics such as environmental durability [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ] and material mechanics [ 16 , 17 ].…”

Crack Shape Coefficient: Comparison between Different DFOS Tools Embedded for Crack Monitoring in Concrete

“…In other words, they could have a double function, both sensing and reinforcing at the same time. It is worth underlying that the application of FRP reinforcement is also favourable from a durability point of view [ 76 ], as it is fully resistant to corrosion. That aspect should be considered for long-term structural health monitoring, especially when DFOS tools are operated in harsh environmental conditions.…”

Research on Impact Resistance of Reinforced Concrete Beams Strengthened with Carbon Fiber Reinforced Polymer Grid and Engineered Cementitious Composites

“…At present, the use of FRP for reinforcement and strengthening of concrete structures [ 1 , 2 , 3 , 4 , 5 ] is more and more extensive, among the more recent methods are FRP bar strengthened ECC [ 6 , 7 , 8 , 9 ] and FRP sheet strengthened ECC [ 10 , 11 , 12 ], etc. The strengthening methods for RC beams under impact loading are mainly strengthened with FRP sheet/plate [ 13 , 14 , 15 , 16 , 17 ], fiber reinforced concrete [ 18 , 19 ], externally bonded steel plate [ 20 , 21 ], high strength steel wire mesh and high-performance mortar [ 22 , 23 ], etc.…”