Per: paulo anderson aranha ferreira (universidade federal do pará), Damares da cruz barbosa nascimento (universidade federal do pará), thiago corrêa (ceará alimentos), sérgio neves monteiro (instituto militar de engenharia ), verônica scarpini candido (universidade federal do pará), alisson clay rios da silva (universidade federal do pará)
Abstract:
Geopolymers are inorganic materials, aluminosilicates activated alkaline by geopolymerization reaction. Because they have properties similar to Portland cement, research has been carried out to ensure the use of geopolymers in civil construction. Thus, the present work approaches the production of geopolymeric mortars, added with Blast Furnace Slag (BFS), submitted to a temperature of 300°C and 800°C. For this study, metakaolin, blast furnace slag (BFS), and commercial sand in amounts of 0%, 59%, 69% and 75% were used, and for alkaline solution Potassium Hydroxide (KOH) and Silicate were chosen of Sodium (Na2SiO3). After production, they were cured and then subjected to a temperature of 300°C and 800°C. For analysis purposes, Optical Microscopy (OM) and Rietveld Refinement characterizations of the raw material were performed. Finally, the results point to geopolymer mortar with 69% aggregate as a material superior to other formulations, due to the low percentage of defects in the morphology of the fragmented surface, considering the temperature variation, from 300°C to 800°C.