Mechanical properties of concrete reinforced with basalt fibers

Abstract

In the article, the compressive strength, tensile strength, and residual tensile strength of fiber-reinforced concrete reinforced with basalt fibers were studied based on the experiment. Basalt fibers 10 mm and 30 mm in length and 0.017 mm thick were added at 0.0%, 0.1%, 0.2%, and 0.3%. The samples were stored at room temperature and relative humidity above 75%, and the samples were tested on days 7 and 28. The addition of fibers increased the compressive strength, tensile strength, and residual tensile strength of concrete and changed its brittle behavior to a more ductile one. When 10 mm length basalt fibers were added to concrete in amounts of 0.1, 0.2, and 0.3%, the tensile strength was 2.35 MPa, 2.38 MPa, and 2.40 MPa, respectively. When 30 mm length basalt fibers were added to concrete in amounts of 0.1, 0.2, and 0.3%, the tensile strength was 2.22 MPa, 2.32 MPa, and 2.36 MPa, respectively. The compressive strength of prism samples reinforced with basalt fibers increased by 10-20% compared to ordinary concrete.