Análise comparativa do aumento de resistência à tração em concreto reforçado com fibra de vidro

Abstract

As the most used material in the construction industry, Portland cement concrete is the center of research in civil engineering, so that new, more resistant, and durable materials are developed. Because concrete is a composite, several elements can be introduced into its composition, with the aim of improving its performance in the desired area. A component that has been increasingly studied in conjunction with concrete is fiber due to its high tensile strength. Thus, glass fiber reinforced concrete (CRFV) combines the good compressive strength of concrete with the tensile strength of the fiber. The main objective of this work is to compare the tensile strength gain in the CRFV from the incorporation of short fibers to the mixture in three different proportions (0.5%; 1.0% and 1.5% of the fine aggregate weight). The methodology used was bibliographic research, focused on similar research carried out in the area, and laboratory tests of axial compression and traction by diametrical compression, for data analysis. The results for this study are promising, since it is possible to obtain significant strength increases in several tests, since the fibers prevent the propagation of the internal microcracks and distribute the efforts efficiently. However, there is a reduction in workability related to the increase in the amount of fibers in concrete, but which can be circumvented from other studies.