Comparative study of basalt fiber and steel fiber as additives to concrete

Abstract

It is widely acknowledged that Basalt Fiber (BF) and Steel Fiber (SF) concrete possess a significant characteristic of superior resistance to cracking and crack propagation. This unique ability to arrest cracks results in fiber composites having enhanced extensibility and Ts, both at the initial crack and at the ultimate stage, particularly under flexural loading. Moreover, these fibers are capable of maintaining the integrity of the matrix even after extensive cracking. This research paper delves into the mechanical properties, technologies, and applications of BF and SFs. The study involved experimental investigations using M40 grade concrete mix, and tests were conducted in accordance with recommended procedures outlined in relevant codes. The laboratory experiments included the design of cubes, beams, and cylindrical specimens with varying percentages of BF and SF concrete ranging from 0% to 1.25% (0%, 0.25%, 0.5%, 0.75%, 1% and 1.25%). The obtained data was analyzed and compared with a control specimen (0% Fiber), and ultimately, the test results for BF and SF were compared. Additionally, a graphical representation was provided to illustrate the relationship between Cs, Fs, Ts, and Age i.e. 7 days and 28 days.