Avaliação do efeito combinado de microfibra de celulose e microcelulose cristalina nas propriedades das argamassas de revestimento

Abstract

The construction industry has evolved with the search for more efficient and sustainable materials, driving the development of mortars modified with natural additives. This study investigated the effects of the combined addition of cellulose microfiber (FC) and crystalline microcellulose (MCC) on the properties of coating mortars, both in the fresh and hardened state. The formulations were subjected to consistency, capillary water absorption and compressive strength tests, according to Brazilian technical standards. The results indicated that the combined addition of FC and MCC provided an increase in the spreading of the coating mortars, indicating more plasticity in the mixture. Based on the compressive strength results obtained, it was possible to conclude that the combined additions of FC-MCC did not significantly influence the coating mortars. Regarding capillary water absorption, it was observed that the combinations of FC-MCC celluloses increased the average absorption values at 90 minutes, suggesting an increase in the porosity of the mortars due to the addition of these celluloses.