*Proceeding Paper* **Flexural Performance of Chopped Basalt Fiber Reinforced Concrete Beams †**

**Birgir Leo Olafsson 1, Gudbjartur Jon Einarsson <sup>2</sup> and Eythor Rafn Thorhallsson 3,\***


**Abstract:** This article discusses the flexural strength of fiber reinforced concrete beams made by adding an optimal percentage of basalt fibers to the concrete mix. Two types of standard C30/37: XC1 concrete were used in this study, one with the aggregate size limit 19 mm and the other with the aggregate size of max. 4 mm. The basalt fibers used are two different types: Reforcetech minibar is a stiff basalt fiber, and its diameter is 0.72 mm and length 50 mm; Basaltex BCS17-25.4-KV1 is 30 mm in length with a flat cross-section of 0.017 × 4 mm. The test method measures the flexural efficiency of the strength parameters extracted from fiber reinforced concrete. The conclusion of this study is that the scale, quantity and type of basalt fibers have an impact on how the concrete acts under load. All types of fiber show promising results.

**Keywords:** concrete; basalt fibers; flexural behavior; tensile strength; cement
