Mineralogical Analysis of Portland Clinker Produced from the Incorporation of Granitic Rock Fines (GRF)

Abstract:

Portland cement is the result of the calcination of a properly raw mix of limestone and clay, at high temperatures, and its manufacturing process is responsible for high environmental impacts, such as the exploitation of the deposits of these raw materials. In this context, the search for alternative raw materials becomes necessary. Thus, the present work analyzed the feasibility of the use of granite rock fines (GRF), waste generated in the process of production of aggregates for civil construction (gravel), aiming at the manufacture of Portland clinker. Firstly, the raw materials were characterized physically, chemically and mineralogically and, from these results, different raw mixes were prepared with different weight substitution of clay by the GRF (0%, 25%, 50%, 75% and 100%). Clinkers were produced from the calcination of the raw materials, and these were characterized mineralogically, in order to verify the optimal incorporation content of the GRF. Thus, it was possible to observe that the substitution of clay by GRF is technically viable and does not significantly interfere in the formation of mineralogical phases of Portland clinker.

• Periodical: Key Engineering Materials (Volume 803)
• Pages: 309-313
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.803.309
• Online since: May 2019
• Authors: André Gonçalves Gomes*, Tiago Assunção Santos, José Andrade Neto, Daniel Véras Ribeiro
• Keywords: Cement, Clinker, Granitic Rock Fines

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