Materiales de Construcción, Vol 59, No 296 (2009)

Studies on the behaviour of different spent fluidized-bed catalytic cracking catalysts on Portland cement


https://doi.org/10.3989/mc.2009.48108

J. Payá
ICITECH, Instituto de Ciencia y Tecnología del Hormigón, Universidad Politécnica de Valencia, Spain

M. V. Borrachero
ICITECH, Instituto de Ciencia y Tecnología del Hormigón, Universidad Politécnica de Valencia, Spain

J. Monzó
ICITECH, Instituto de Ciencia y Tecnología del Hormigón, Universidad Politécnica de Valencia, Spain

L. Soriano
ICITECH, Instituto de Ciencia y Tecnología del Hormigón, Universidad Politécnica de Valencia, Spain

Abstract


The fluidized-bed catalytic cracking catalyst (FCC) it is a residue from the industry of the petroleum that shows a high pozzolanic reactivity and, in cementing matrix, it significantly improves their mechanical behaviour as well as durability. In this research a comparative study on residues of catalyst from different sources has been carried out, in order to know if these residues can be used jointly in an indiscriminate way or, on the contrary, it is necessary to classify them according to their characteristics. Thus, a study on five different FCC residues, supplied from different companies, has been carried out, and their physical-chemical characteristics, pozzolanic reactivity by means of thermogravimetric analysis and the evolution of the mechanical strength of mortars were studied. After analyzing all the aspects, it can be concluded that no significant differences among the different tested catalysts were found.

Keywords


Thermal analysis; X-ray diffraction; hidration; pozzolan; compressive strength

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References


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