Estudo de argamassa autonivelante com adição de cinzas de sementes do açaí: análise das propriedades físicas e mecânicas

Abstract

Self-leveling mortars are products that stand out in the market for optimizing production, and their faster application is achieved due to their high fluidity and leveling capacity without segregation. This study focuses on self-leveling mortars formulated with CP II-Z 32 cement and the addition of açaí pit ash, considering the replacement of 0%, 5%, and 10% of the cement with the ash, and evaluates the effect of these materials on physical and mechanical properties. The mortars were evaluated through tests such as the Kantro cone for spreadability, particle size distribution, water absorption by capillarity, and compressive strength. The results indicate that replacing cement with açaí kernel ash meets regulatory requirements in terms of mechanical properties, which can be achieved with an appropriate mix design. Using 5% and 10% açaí pit ash replacement provided the necessary strength for applications such as subflooring. Moreover, it was observed that as the replacement level increased, water absorption and, consequently, the capillarity coefficient also increased, without significantly affecting compressive strength.