Comportamiento Mecánico del Concreto Hidráulico Reforzado con Fibras Pet Recicladas y su Implementación en la Construcción de Losas de Pavimento Rígido

Abstract

In order to make the use of hydraulic concrete in construction more efficient, mitigate the environmental impact caused by the disposal of products or containers with PET-type products such as soda bottles and other similar products, and reduce the cost of concrete production, It is proposed to investigate the influence of recycled PET fibers on the mechanical properties of hydraulic concrete, for its implementation in the construction of rigid pavement slabs, for this purpose the effect of adding recycled PET fibers on resistance to wear and tear was evaluated. compression, flexural strength and modulus of elasticity of specimens made without addition and with addition of PET fibers in values of 0, 1, 2 and 3 kg of fiber per cubic meter of concrete mix, designed for a MR of 40 kg/cm2. Likewise, the behavior of concrete reinforced with PET fibers in rigid pavement slabs was evaluated, through modeling with a finite element program. The results obtained allowed us to conclude that in the case of compressive strength, the reinforcement of concrete with small amounts of recycled PET fibers increases the resistance of the material; the reinforcement of concrete with PET fibers increases the flexural resistance (modulus of rupture) of the material; According to the values studied, amounts of PET fiber generate significant increases in the flexural strength of the concrete, it was also observed that an increase in the content of PET fibers produces a small reduction in the modulus of elasticity. Through modeling with the SAP2000 finite element program, it was found that with the addition of PET fibers to the concrete, there is a reduction in both the tensile stresses and the bending moments inside the slab, and an increase is generated in the deflections of the pavement slabs.