Moment - curvature behavior of basalt fibred concrete beams made with basalt fibre reinforced polymer bars

In the current study the moment - curvature behavior of basalt fibred concrete beams made with basalt fibre reinforced polymer bars and normal beams with steel rebars are evaluated. Basalt fibred reinforced concrete beams of M30 grade were casted with steel and BFRP rebars separately to study the flexural properties of basalt fibre and BFRP bars. From the load –deflection plots, flexural characteristics such as load at first crack, ultimate flexural strength, deflection at the centre and crack width at failure are evaluated. Deflections were measured at the central point and under the load using the deflection meters. The values of moments and curvatures are obtained. Moment curvature relationships are very important to assess out ductility of the structure and the amount of possible redistribution of stresses. The deformations measured are divided by the gauge length (200mm) to obtain the strains at the particular level. From the top and bottom strains, the average curvatures were calculated. From these results, M-Ф diagrams are plotted