Aplicação do poliestireno sulfonado – PSS, obtido por meio da reciclagem e processamento de copos plásticos descartáveis, em adição na composição de argamassas cimentícias

Abstract

The production and consumption of plastic materials has increased considerably all over the world. These materials of non-renewable origin are quickly discarded, generating a relevant amount of waste that significantly impacts the environment. Among the various types of plastics, the disposable cup, produced, among others, from Polystyrene – PS, is responsible, in Brazil alone, for the generation of around 100 thousand tons per year, of which only 9% are recycled. In this work, plastic cups produced from Polystyrene were recycled and processed to obtain an additive based on Sulfonated Polystyrene – PSS. This additive was incorporated into the cementitious mortar, at levels from 0.5% to 1.5% and its influence on the increase in the properties of the mortars in the fresh and hardened state were evaluated by means of plasticity, absorption, permeability, mechanical strength tests and crack formation. It was concluded that the PSS obtained from the recycling of disposable cups, in addition to a sustainable action, can act as a plasticizer additive, reflecting in improvements in the plasticity, absorption, permeability and resilience properties of cementitious mortars.