Reutilización de un residuo de la industria petrolera (FCC) en la producción de elementos constructivos

Abstract

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 into the concrete FCC 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 classified as non-structural blocks and floor pavers. It raises this is an alternative use of the residue and contribute to environmental sustainability.