Comparative Study of Moment-Curvature Diagram in Beams with FRP Bars for Three Constitutive Models of the Concrete
Mag Daniel Quiun Wong, Mag Johan Hinostroza Yucra

It is widely known the problem of corrosion that affects the steel bars used in reinforced concrete. For example, in 2012 India spent 70.3 billion dollars with a GDP of 1670 billion on structures that suffered corrosion, in other words 4.2% of GDP (Gerhardus et al 2016). Also, the cost of corrosion in USA in 2016 was 2.5 trillion dollars ( / G2MT). For this reason, it is necessary to continue making studies related to mitigation of corrosion. Recently, the basalt bars have appeared as an alternative reinforcement to steel bars in concrete. The advantage of basalt bars over the steel bars lies in that they do not suffer corrosion. These basalt bars are the fusion of basalt fibers from the rock and resin. The aim of this paper is to analyze the behavior of a concrete beam cross section, reinforced with basalt bars through the moment-curvature diagram. Then, the comparison of three moment-curvature diagrams obtained with different constitutive models available for concrete is presented. The constitutive models selected for the purposes of this paper have been proposed by the American Concrete Institute (ACI), the European Concrete Committee (CEB) and Kent and Park, for the calculation of the nominal bending moment.

Full Text: PDF     DOI: 10.15640/jea.v7n1a4