Resumo

CAICEDO-CAICEDO, Eduard A; MEJIA-DE-GUTIERREZ, Ruby; GORDILLO-SUAREZ, Marisol  e  TORRES-AGREDO, Janneth. Reusing a Residue of the Oil Industry (FCC) in the Production of Building Elements. Ing. Univ. [online]. 2015, vol.19, n.1, pp.135-154. ISSN 0123-2126.  https://doi.org/10.11144/Javeriana.iyu19-1.rrip.

This paper analyzes the feasibility of using a residue of spent catalyst (FCC) of the cracking process, from a Colombian oil company, in the production of building elements such as blocks and pavers. To define the optimal mix of Portland cement / FCC, Portland cement mortars with FCC ratios between 0 and 70% as replacement of cement were prepared and its compressive strength is evaluated at ages up to 28 days of curing. Using a statistical processing, applying the methodology of response, the proportions of each component in the mixture are optimized. Subsequently, blocks and pavers were developed using a vibro-compaction machine. In addition the study of the process of hydration is performed by techniques of X-ray diffraction (XRD) and differential thermal analysis (TG / DTG). The results indicate that it is possible to incorporate FCC into the concrete as replacement of cement up to 45% and obtain a building element with mechanical properties comparable to those commercially available elements. According to the Colombian standard, the elements developed in this research are classified as non-structural blocks and floor pavers. The developed process represents an alternative for the use of residue and contributes to enviromental sustainability.

Palavras-chave : fluid catalytic cracking; blended cements; building elements.

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