Per: FLAVIO JAMES HUMBERTO TOMMASINI VIEIRA RAMOS (Instituto Militar de Engenharia (IME)), Ana Paula dos Santos Pereira (Instituto Militar de Engenharia), Marcelo Henrique Prado da Silva (Instituto Militar de Engenharia (IME)), Jheison Lopes dos Santos (Universidade Federal Rural do Rio de Janeiro (UFRRJ))
Abstract:
The geopolymer materials are obtained by the alkaline activation of aluminosilicate sources. Also called geopolymers; have high mechanical strength, chemical inertia and can be manufactured from a number of by-products in the industry. In this work the geopolymer samples were produced by the alkaline activation with NaOH of blast furnace slag (EAF) with addition by weight of 3%, 4% and 5% of nióbia (Nb2O5). The geopolymer samples were produced in different solid to liquid ratios by adopting the ratio by weight with values of 1.2; 1.4 and 1.6. The study was based on the analysis of the apparent porosity by the Archimedes method, as well as the analysis of scanning electron microscopy (SEM), through which it was possible to observe the surface, microstructure, interfacial interface of the sintered aluminosilicates hybrids, and finally the processability of sustainable materials, as in the case of blast furnace slag geopolymers. The research demonstrated the feasibility of the sintering process of geopolymers for possible application as engineering material. The specimens produced reached dimensional stability and variable porosity. The material presented a great possibility, with potential to be used as a good gas and liquid adsorption medium, besides several applications, such as thermal and acoustic coating, since the processed product is a ceramic material.