Per: iully da silva amaral pereira (uenf), José Alexandre Tostes Linhares Júnior (uenf), Samuel Araújo Azevedo Malafaia (uenf), Larissa Mendonça Osorio Fonseca (uenf), Juliana Fadini Natalli (uenf), Afonso Rangel Garcez Azevedo (uenf), sergio neves monteiro (ime)
Abstract:
Cementitious mortar is a material widely used in civil construction, mainly composed of the binders cement and lime. The cement industry, in turn, is one of the main contributors to CO₂ emissions, causing various environmental impacts. In order to mitigate these effects, eco-friendly alternatives are sought, such as the incorporation of lignocellulosic fibers in cementitious matrices, aiming to improve the properties of the material by reducing the exploitation of these raw materials. In this context, the performance of coating mortars was analyzed in the proportion 1:1:6;1.4 (cement:lime:sand:water), with the addition of 3% pineapple leaf fibers, treated with tannic acid. in concentrations of 2.5% and 5%, and the control mortar (without fibers). The tests carried out evaluated the resistance to traction, compression and mass density in the hardened state. The results indicated that the mixtures with treated fibers showed an increase in resistance after 28 days, and in density, in relation to the reference mortar. On the other hand, the mixture without fibers had lower tensile and compressive strengths. In this way, coating mortars reinforced with vegetable polyphenol demonstrated promising results, pointing to their viability as a sustainable alternative.