Geopolymer Obtention Using Calcined Rice Husk Ash

Carlos Eduardo Pereira; André Miranda da Silva; Josiele Souza Batista Santos; Bianca Viana de Sousa

doi:10.4028/www.scientific.net/MSF.881.373

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Geopolymer Obtention Using Calcined Rice Husk Ash
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HomeMaterials Science ForumMaterials Science Forum Vol. 881Geopolymer Obtention Using Calcined Rice Husk Ash

Geopolymer Obtention Using Calcined Rice Husk Ash

Abstract:

This study aimed to synthesize geopolymer materials using the ash of burned rice husk. The material was prepared from bauxite slurry, rice hull ash was calcined at 600 °C, metakaolin and sodium hydroxide 12 M solution. The material was cured at 60 °C for 6 h and then at ambient temperature for up to 28 days. We used the same mixture of experimental design to synthesize geopolymer. Through techniques spectroscopy energy dispersive X rivers and X-ray diffraction, it appears that the silica and alumina contents of the identified raw material meets the conditions laid down as minimum for precursors with geopolymer activation potential, as evidenced by the molar ratio Si/Al sample. Geopolymer obtained from the XRD patterns showed characteristic peaks of hydrated calcium silicate. It was found that the particles had irregular shapes and sizes, and the presence of voids affecting the strength of the material. The geopolymeric material obtained showed improvements in the bending strength in a curing time of 28 days.

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Materials Science Forum (Volume 881)

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373-378

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https://doi.org/10.4028/www.scientific.net/MSF.881.373

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November 2016

Authors:

Carlos Eduardo Pereira, André Miranda da Silva, Josiele Souza Batista Santos, Bianca Viana de Sousa

Keywords:

Calcination, Geopolymer, Rice Husk Ash

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