Estudo comparativo entre o concreto convencional e o concreto com adição de fibra ótica

Abstract

The main objective of this study is to carry out a comparative study between conventional concrete and concrete with the addition of optical fiber. To this end, experimental tests of compressive strength were carried out on cylindrical specimens (28 days) and of light transmittance on translucent panels manufactured with diameters of 3.00mm, 1.00mm and 0.75mm, containing 4% proportion by volume of fibers for both the specimens and the translucent panels. The focus of the study is on the comparison between the manufactured specimens, seeking to evaluate which mixture presented the best results when subjected to compressive loading and which of the polymeric optical fibers (POF) presented the most favorable results. Furthermore, we also sought to evaluate and compare the results of light transmittance on translucent panels under natural light at 10 am, 12 pm, 2 pm and 4 pm on both sides of the panels (A and B), over 28 days, and under artificial light using an LED lamp. From the study, it was evident that the specimens with the addition of POF presented lower compressive strength results when compared to conventional concrete. However, among the mixtures with addition, it appears that concrete with larger diameter POF (3.00mm) presented the most favorable results. With regard to light transmittance, it was found that face B of the panel with a POF of Ø1.00mm presented the most favorable results. However, the total average result between the panels indicates that the panel with a Ø3.00mm POF obtained the most satisfactory results under natural light. Under artificial light, the results were very close, with a slight advantage for the panel with a Ø1.00mm POF, whose difference in relation to the panel with a larger diameter was only 1 Lux. Therefore, it is concluded that among the concretes with the addition of optical fiber experimentally tested, the mixture with larger diameter POF (Ø3.00mm) presented the most favorable results, achieving compressive strength values closer to conventional concrete and simultaneously obtaining the most satisfactory total average results in terms of luminous transmittance under natural light, with a minimal difference under artificial light