Concreto reforçado com fibras sintéticas para pisos industriais

Abstract

Synthetic fiber-reinforced concrete (SFRC) emerges as an efficient alternative to improve the performance of industrial floors, particularly regarding durability, crack control, and post-cracking behavior. The motivation for this study lies in the growing demand for technically and economically viable solutions that ensure greater service life and mechanical resistance for floors subjected to high loads. The main objective was to evaluate the applicability and performance of SFRC in industrial pavements, addressing aspects of mix design, structural design, and overall mechanical behavior. The methodology consisted of a case study of a logistics warehouse floor, designed in accordance with the TR 34 (2016) and CEN EN 1992-1 (2023) standards. Concentrated and distributed loads acting on the slab were analyzed, and flexural and punching shear verifications were carried out. The concrete used was of class C30 with an addition of 80 kg/m³ of synthetic fibers. The results showed that the total resistant moment exceeded the maximum applied moment, confirming compliance with flexural and punching strength requirements. It was also observed that the use of fibers significantly increased toughness and the capacity to absorb residual stresses, reducing crack propagation and improving the pavement’s durability. It is concluded that synthetic fiber-reinforced concrete represents a technically efficient, safe, and cost-effective solution for industrial floors, providing superior structural performance and longer service life for concrete structures.