Performance Evaluation of Pineapple Crown Fibers (Ananas Comosus) in Cementitious Composites

Brazil has been standing out in the agro-industrial production in which large volumes of wasteWaste are generated, including pineapple fibersPineapple fibers. Natural fibersNatural fibers have been studied in different compositesComposite, especially cementitious. This research aimed to evaluate fibers from the pineapplePineapple crown for their application in coatingCoating mortarsMortar. The residue was submitted to wetting and drying cycles and, was treated in variable parameters: reagent concentration (5 and 10%), exposure time to chemicalChemical attack (30 min and 60 min), and type of reagent (NaOH and Ca (OH)2). The fibers were incorporated with 1.5% in relation to the mass of cementCements of the produced mortarMortar and compared with the reference mortarMortar (0%), which were evaluated in the fresh state. It was found that the treatment with NaOH was the one that most degraded the external surface of the fiber and the produced mortarsMortar showed satisfactory performance, thus contributing to the development of alternative materials.