Diseño a flexión de elementos de hormigón reforzado con varillas corrugadas de fibra de vidrio.

Abstract

Until now, the biggest problem with concrete structures reinforced with corrugated steel bars is the corrosion that occurs due to the environmental attack to which they are subjected. However, the material is widely used because of the high ductility provided for the designs, in addition to its excellent bond and tensile strength properties. In this dissertation, fiberglass rebar or “GFRP” (Glass Fiber Reinforced Polymer) will be displayed as an alternative solution for the reinforcement of concrete structures, breaking down its composition and manufacturing process to establish the physical and mechanical properties so that behavior and design criteria can be formulated. Subsequently, design equations will be shown based on the North American standard ACI-440.1R-2015 that takes into account a great variety of tests carried out on the material to compare it with those rules applied in the design of steel reinforcement, shown in the North American standard ACI -318-2019. After defining the methodology for the calculation of GFRP reinforcement, designs have been made in elements such as beams, slabs, retaining walls and footings, as long as these do not require greater ductility or significant deflections. The results obtained will be used to make a comparison (to corrugated steel rods) of the mechanical, economic and constructive aspect to determine those circumstances where the implementation of GFRP rods is beneficial and not counterproductive.