<p>This study experimentally investigated the influence of basalt fiber on normal-strength concrete. Six fiber volume fractions were incorporated into an identical concrete mixture, ranging from 0.00 to 0.75%. The results showed that increasing fiber content lowers fresh concrete workability. Therefore, a superplasticizer should be used to modify the concrete fluidity. Incorporating basalt fiber into the concrete mix at specified percentages increases compressive, tensile, and flexural strength. The increment rate of compressive and flexural strength improved up to 0.3% volume fraction. Then, the increment percentage decreased from 0.3 to 0.6% of the fiber content. The lower fiber percentages raised the concrete strength more than the higher ones. Adding 0.3% of basalt fiber to the mixture increased the compressive strength by 24%, while 0.15% volume increased the strength in flexure and tension more than the other percentages. However, 0.15% and 0.3% increased the flexural and tensile strength by 22% and 36%, respectively, over the non-fibrous concrete. Therefore, 0.15% and 0.30% fiber volume fractions are assumed to be the beneficial percentages for enhancing concrete strength. Contrary, 0.75% was reduced compressive and flexural strength, and slightly increased tensile strength. The impact of basalt fibers was more pronounced on tensile strength. Further, a theoretical analysis was conducted using the Least-Squares method to predict the strength of basalt fiber-reinforced concrete in compression, tension, and flexure. Three equations were derived, and their results were compared with experimental data. They gave convergence to the experimental results obtained by several researchers.</p> Graphical abstract <p></p>