Open AccessCompósito de resíduos de mineração com cimento e cal para materiais de construção sustentáveis
Author(s) -
Ricardo Eugênio Barbosa Ramos Filho,
Jônatas Macêdo de Souza,
João Batista Duarte,
Vamberto Monteiro da Silva,
Wilson Acchar
Publication year - 2021
Publication title -
principia/revista principia
Language(s) - English
Resource type - Journals
eISSN - 2447-9187
pISSN - 1517-0306
DOI - 10.18265/1517-0306a2021v1n54p193-205
Subject(s) - cement , lime , residue (chemistry) , compressive strength , materials science , scanning electron microscope , nuclear chemistry , mineralogy , pulp and paper industry , humanities , chemistry , composite material , metallurgy , engineering , art , organic chemistry
Sustainable alternatives have been developed with the use of waste in construction, among which we can highlight mining waste due to its large amount generated and environmental impact caused. This work consists in the joint application of scheelite residue and stone powder with lime and cement addition, producing cylindrical specimens, to evaluate possible uses in constructive materials. After chemical and physical characterization, the percentage of each residue was determined through the analysis of packing between the particles, which resulted in a formulation of 50% of each residue with the addition of cement and / or lime in the contents of 6% and 12%. Essays for simple compressive strength (SCS), water absorption (WA) and chemical phase analysis by scanning electron microscopy (SEM) and X-ray diffraction (XRD) were evaluated at determined cure times. The SCS essays results of formulations with residues and cement reached values above 1 MPa and WA essays results with value below 20%, according to the Brazilian technical standards. Cement phases were observed in SEM and XRD analysis. The results obtained from mixing the waste with the cement are promising for the manufacture of cement building materials.