A utilização do PET reciclado e extrusado como substituto de armadura de distribuição em lajes

Abstract

This study investigates the use of recycled and extruded Polyethylene Terephthalate (PET) as an alternative to CA-50 steel in distribution armatures for reinforced concrete slabs, aiming to promote sustainable and efficient practices in the construction industry. Employing an innovative comparative methodology with prismatic molds to evaluate mechanical properties, 49 test specimens were analyzed, revealing that PET significantly reduces energy consumption for its production, with a decrease of 95.5% compared to steel, amounting to only 0.72 MJ/Kg. The results highlight the optimal efficiency achieved by implementing two PET bars every 15 cm, countering the notion that a greater number of bars results in increased strength, and underline the importance of considering factors such as modulus of elasticity and temperature variations for practical application. It concludes that recycled PET presents itself as a promising alternative to steel in distribution armatures, aligning with the goals of energy efficiency and sustainability in the sector.