Avaliação da viabilidade da substituição parcial do agregado miúdo por politereftalato de etileno (PET) em argamassas.

Abstract

Ethylene Polyterephthalate (PET) is a thermoplastic widely used worldwide for packaging manufacturing. The low cost of production and the consequent improvement of its manufacturing process has made PET one of the main plastics of today. For the production of mortars, the addition of polymers improves rheological properties, generating greater mechanical strength, improving physical and state properties, and reducing and / or improving the final disposal of this product on the environment. The main objective of this work is to evaluate the feasibility of partial replacement of the fine aggregate by Polyethylene Terephthalate (PET) in the contents of 0, 5% and 10%. Cylindrical samples were molded in the dimensions of 5cm x 10cm and the absorption by immersion, voids index, specific mass and the simple compressive strength for the ages of 7.14 and 28 days were determined. The results show that there was an increase in water absorption, voids index and a reduction in the specific mass of specimens incorporated with PET when compared to the reference mortar. For the tensile strength mechanical test there was a reduction in the values of the modified mortars with PET.