INFLUENCE OF THE VARIATION OF THE PERCENTAGE OF INCREASE OF BAUXITE RESIDUE ON THE PHYSICAL AND MECHANICAL PROPERTIES OF SYNTHETIC COARSE AGGREGATES AND THEIR USE IN STRUCTURAL CONCRETE OF NORMAL STRENGTH PORTLAND CEMENT

Authors

  • Robson da Silva Fernandes
  • João Carlos Lisboa de Lima
  • Marcella Camilly Dias Ribeiro
  • Danusa Mayara de Souza
  • Lucas Miranda Pantoja
  • Marcelo Martins Farias
  • Celestina Lima de Rezende Farias
  • Fabíola Thomaz Maia
  • Wladimir Rafael de Matos Lamarão
  • Patricia da Silva Chaves
  • Elsimar Souza Santos
  • Lucas Emanoel Mateus Pereira Lopes
  • William Meireles de Souza
  • Marcelo de Souza Picanço

Keywords:

Synthetic Coarse Aggregate, Bauxite Residue, Concrete, Tests, Microstructure, Aggregate Modulus

Abstract

The present study is an integral part of an extensive cooperation project aimed at conducting research between the Federal University of Pará and the company Hydro Alunorte. The proposal consisted of producing synthetic coarse aggregates from bauxite residue (AGS) and their subsequent use in the production of conventional-strength structural concrete. This research refers to the study, which partially addressed the dynamics of the production cycles of synthesized aggregates. For this purpose, the AGS70 and AGS80 coarse aggregates from the third production cycle were used. The percentage discrepancy of residue in the aggregate composition was approximately 10%. Among the results obtained, the analyses of the physical and mechanical properties of the synthetic aggregates stand out. In this context, AGS80 showed a water absorption capacity 24% higher than that of AGS70. The results obtained in the composites with AGS70 and AGS80 aggregates indicated that, at an initial stage, the concrete with AGS80 showed better results regarding physical and mechanical properties.

DOI: https://doi.org/10.56238/sevened2026.008-048

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Published

2026-01-21

Issue

Horizons of Insight: Exploring the Frontiers of Multidisciplinary Science

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

Fernandes, R. da S., de Lima, J. C. L., Ribeiro, M. C. D., de Souza, D. M., Pantoja, L. M., Farias, M. M., Farias, C. L. de R., Maia, F. T., Lamarão, W. R. de M., Chaves, P. da S., Santos, E. S., Lopes, L. E. M. P., de Souza, W. M., & Picanço, M. de S. (2026). INFLUENCE OF THE VARIATION OF THE PERCENTAGE OF INCREASE OF BAUXITE RESIDUE ON THE PHYSICAL AND MECHANICAL PROPERTIES OF SYNTHETIC COARSE AGGREGATES AND THEIR USE IN STRUCTURAL CONCRETE OF NORMAL STRENGTH PORTLAND CEMENT. Seven Editora, 822-840. https://sevenpubl.com.br/editora/article/view/9090