Engineering, mechanical and dynamic properties of basalt fiber reinforced concrete

Han Wu, Xia Qin, Xu Huang, Sakdirat Kaewunruen

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Abstract

This study investigates the engineering and mechanical properties of basalt fiber-reinforced (FRF) concrete, giving special attention to residual flexural strength and dynamic modal parameters. These properties, which have not been thoroughly investigated elsewhere, are a precursor to structural design applications for dynamic compliant structures (i.e., bridges, offshore platforms, railways, and airport pavement). Accordingly, the standard notched flexural tests have been carried out to assess the basalt fiber-reinforced concrete’s residual flexural strength with an additional 0.125%, 0.25%, 0.375%, and 0.5% of volume fraction of basalt fiber. In addition, dynamic modal tests were then conducted to determine the dynamic modulus of elasticity (MOE) and damping of the FRF concrete beams. The results indicate that concrete’s toughness and crack resistance performance are significantly improved with added fiber in basalt fiber reinforced concrete, and the optimum fiber content is 0.25%. It also exhibits the highest increment of compressive strength of 4.48% and a dynamic MOE of 13.83%. New insights reveal that although the residual flexural performance gradually improved with the addition of basalt fiber, the damping ratio had an insignificant change.
Original languageEnglish
Article number623
Number of pages17
JournalMaterials
Volume16
Issue number2
DOIs
Publication statusPublished - 9 Jan 2023

Keywords

  • basalt fiber reinforced concrete
  • residual flexural strength
  • modal test
  • damping ratio
  • dynamic modulus of elasticity
  • Article

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