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- Title
Avaliação do potencial de argilas de Sergipe e Alagoas na produção de agregados para uso em concreto.
- Authors
Oliveira, H. A.; Santos, C. P.; Oliveira, R. M. P. B.; de Jesus, E.; Macedo, Z. S.
- Abstract
This study aims to characterize technologically three clays employed by ceramic industries in Sergipe state, Brazil. Its potential use for the production of calcined synthetic aggregate to substitute gravel in concrete production was evaluated. The characterization of the clays included particle size and plasticity analysis, X-ray diffraction, differential and thermogravimetric analyses, dilatometry, X-ray fluorescence, organic matter content, cation exchange capacity, specific area, and scanning electron microscopy. Ceramic bodies were uniaxially pressed under 30 MPa, into rectangular and cylindrical shapes. Ceramic bodies of individual clays and also ceramic formulations were fired and subsequently characterized to determine their water absorption, apparent density, compressive strength, and grain morphology. It was observed that, after firing at 1120 °C, two formulations presented strength, water absorption and specific mass comparable to those of gravel used in concrete.
- Publication
Ceramica, 2017, Vol 63, Issue 367, p318
- ISSN
0366-6913
- Publication type
Article
- DOI
10.1590/0366-69132017633672106