Estudo de geopolímeros utilizando cinzas residuais do bagaço de cana-de-açúcar

• Ano de defesa: 2013
• Autor(a) principal: Castaldelli, Vinícius Nobre [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Engenharia de estruturas; Bagaço de cana - Subprodutos; Resíduos - Construção; Materiais de construção; Agregados (Materiais de construção); Bagasse
• Link de acesso: http://hdl.handle.net/11449/111146

In the present study, we sought to develop and study a geopolymer (material with the potential to replace products derived from cement) with an alternative source of aluminosilicate abundant in Brazil: sugar cane bagasse ash (SCBA). For this, it was necessary to treat it (grinding and calcination) and mix it with most commonly sources used in geopolymers: fly ash (FA) and blast furnace slag (BSF). Tests were performed and analyzed on pastes and mortars alkali activated: chemical composition (by X-Ray Fluorescence), loss on ignition, thermal gravimetric analysis (TGA), laser granulometry, Spectroscopy Fourier Transform Infrared (FTIR), Microscopy scanning electron (SEM), tests of pH, electrical conductivity and mechanical strength. The results obtained (for example, the compressive strength, which showed resistant mortar (SCBA with FA) to 36 MPa and which showed resistant mortar (SCBA with BFS) to 70 MPa), SCBA show that may be used, under certain conditions, as an alternative source for the production of aluminosilicate geopolymers