Evaluation of the Addition of α-Al2O3 on the Mechanical and Thermal Properties in Binding Geopolymer

Danubia Lisbôa da Costa; Rosiane Maria da Costa Farias; Aluska Nascimento Simões Braga; Romualdo Rodrigues Menezes; Gelmires de Araujo Neves

doi:10.4028/www.scientific.net/MSF.820.497

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HomeMaterials Science ForumMaterials Science Forum Vol. 820Evaluation of the Addition of α-Al2O3 on the...

Evaluation of the Addition of α-Al₂O₃ on the Mechanical and Thermal Properties in Binding Geopolymer

Abstract:

Several years ago the study on modification of existing materials that have enhanced properties has gained prominence. In this scenario, the geopolymeric binders, currently widely used in the construction industry have emerged. Thus, this study aimed to evaluate the influence of alumina addition on the mechanical and thermal properties of metakaolin in geopolymer binder. The geopolymers were synthesized from mixtures of metakaolin/alumina and sodium hydroxide, pressed and characterized by diffraction of X-ray and differential thermal analysis and thermogravimetric. Two types of alumina were used in different amounts (14% and 7%) in order to evaluate the effect of the load binder obtained. It can be seen that the incorporation of alumina into the system caused an increase in strength of products obtained as well as a reduction in total mass loss of the sample , especially when the use of fine alumina.

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Periodical:

Materials Science Forum (Volume 820)

Pages:

497-502

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.820.497

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Online since:

June 2015

Authors:

Danubia Lisbôa da Costa*, Rosiane Maria da Costa Farias, Aluska Nascimento Simões Braga, Romualdo Rodrigues Menezes, Gelmires de Araujo Neves

Keywords:

Alumina, Geopolymeric Binders, Metakaolin

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