Utilização de resíduos de EPS em argamassa para chapisco com substituição parcial do agregado miúdo

Abstract

Solid waste management is a topic that is increasingly becoming evident due to the impact it generates on the environment and the regulations surrounding its treatment in order to make the damage caused by its generation and poor disposal less negative. The residue, expanded polystyrene (EPS) due to its low density characteristics, makes its disposal a problem due to the need for large areas for its destination. In this way, the present work examines the viability of incorporating EPS in the composition of mortars as an alternative for replacing the fine aggregate. The physical properties of density, water retention, granulometric distribution, incorporated air content and water absorption by capillarity were evaluated, in addition to the mechanical properties of resistance and traction in bending and thermoacoustic properties. The results showed that the incorporation of EPS residue provides a decrease in the density of the mortar, making it lighter, in addition to bringing a good thermoacoustic performance, presenting a thermal insulation with a temperature variation of up to 9.1°C and an attenuation of noise of up to 24.5 dB. On the other hand, it was assumed that the addition of EPS in the composition of the mortar reduced its mechanical resistance to bending resistance and traction efforts, suggesting its application for uncomplicated fins.