Basalt Fiber Reinforced Polymer (BFRP) Rebars: Performance and Applications

Abstract

The escalating demand for materials characterized by enhanced durability, superior corrosion resistance, and reduced maintenance expenditures has established basalt fiber reinforced polymer (BFRP) rebars as a formidable alternative to traditional steel reinforcement in concrete construction. Originating from the abundantly available basalt rock, basalt fibers demonstrate exceptional tensile strength, outstanding thermal stability, and significant resistance to chemical degradation, positioning them as ideal candidates for challenging environments, such as industrial, coastal, and marine contexts. These fibers are integrated into polymer matrices to formulate BFRP rebars, which serve as lightweight, non-corrosive reinforcement solutions that exhibit greater long-term efficacy compared to conventional steel. This chapter presents comprehensive analyses of the mechanical, chemical, and physical properties of BFRP rebars, alongside thorough evaluations of their performance within reinforced concrete systems. Critical subjects addressed include the interaction of the bond with concrete, resistance to saline and alkaline conditions, durability against thermal variations and freeze-thaw cycles, as well as the structural capacity to endure loads under diverse stress scenarios. Additionally, the chapter explores surface modification techniques, fabrication methodologies, and pertinent design guidelines that govern the production and application of BFRP. The efficacy and benefits of BFRP rebars are illustrated through case studies that encompass bridge decks, tunnels, marine infrastructure, and rehabilitation initiatives. Significant concerns are meticulously examined, including the economic implications, the absence of design codes, and the forecasting of long-term behavior. The chapter concludes with an overview of prospective research avenues, standardization initiatives, and technological innovations aimed at facilitating the extensive adoption of BFRP in sustainable construction practices.