Concreto incorporado com resíduo oleoso de petróleo

Abstract

Oil industries are known all over the world for generating wastes with major environmental impacts. The main waste generated is oil sludge produced in refineries, which contains oil and grease, heavy metals and total hydrocarbons. Thus, it is necessary to treat this waste, considering that sustainability and environmental issues are increasingly rigorous and necessary in the current decades. One of the methods found for the control and mitigation of the environmental problems caused by this residue, since the construction industry has the potential to recycle this type of material is the incorporation of this oily petroleum residue in Portland cement concrete. This work has as main objective to evaluate the effects of the incorporation of oily petroleum residues in partial substitution to the small aggregate in concretes. For this, this project was divided basically in four stages, the first one is the selection of materials: description of materials, adopted criteria for choice and laboratories used; The second one is chemical, physical and mineralogical characterization: conduction of tests to determine the chemical, physical and mineralogical properties of petroleum residue, aggregates and cement; The third is the molding of the specimens in the dimensions of 10cm x 20cm. With incorporation of 10% and 20% oily petroleum residue; And the fourth is the simple compressive strength determination; Resistance attraction in flexion; Determination of the microstructure of the concrete incorporated with oily petroleum residue in the contents of 10% and 20%. After the tests, it was possible to conclude that the oily petroleum residue contributed to the reduction of the tensile strength and compression of the concrete. However, for the substitution contents of 10% can be taken into account and considered acceptable observing the value of fck, superior of 24,34 MPa. As for the microstructure of the concrete, it is observed that the incorporation of the residue provided a homogeneous structure and with the presence of voids.