Estudo das propriedades do concreto leve com poliestireno expandido visando aplicação em placas de vedação pré-fabricadas

Abstract

The growth shown by the civil construction market over the years implies a constant search for optimization of processes and improvement of the performance of materials, always prioritizing quality, safety and speed in services. In this context, the objective of this work is to analyze some properties of lightweight concrete with partial replacement of the coarse aggregate volume by expanded polystyrene pearls, aiming at a possible application of this replacement in the concrete of prefabricated sealing plates. For this, three mixes of concrete were dosed and executed, one without the presence of Expanded Polystyrene to serve as a base, one with replacement of 25% of the volume of coarse aggregate and the third with replacement of 50%. Thus, axial compression strength, traction strength and specific mass tests were carried out at the ages of 7 and 28 days for each trait. It was concluded that the compressive strength and specific mass properties decrease with the addition of Expanded Polystyrene beads, and when analyzed separately, there is no significant difference between the traits of 25% and 50% of substitution of the coarse aggregate, but the values these two traits differ significantly from the base trait values.. Tensile strength showed a decrease proportional to the increase in EPS content.