Utilização eficiente da escória aciaria como adição nos agregados na fabricação de pavers vibro prensado.

Abstract

Currently, the steel manufacturing process follows clearly defined stages. In this process, production waste is generated in some stages, previously considered by-products and discarded without any treatment. With the technological and scientific development of emerging industries, it can be seen that some of these tailings can be reused in the process, or they can have other destinations, being considered by-products of steel manufacturing. these by-products is steel slag, which represents a large amount of slag produced per ton of steel. Faced with such quantity and legal and environmental requirements, it is starting to analyze the possible destinations of these by-products instead of disposal. From this study, it appears that steel slag can be used as a substitute for other inputs in the production chain. Thus, the research aimed to evaluate the efficient use of steel slag as an addition to fine and coarse aggregates in the manufacture of pressed vibrating pavers. Analyzing the compressive strength results, all the mixes reached above 35 MPa at the end of 28 days, only the mixes with slag addition had greater strength gains at the end of 91 days, which is a positive point to be noted. All pavers with and without slag had low water absorption, with pavers with 35% slag having the highest porosity. As for the wear of pavers by abrasion, there was low variation in all traces. The pavers that presented the best quality and strength performance were referring to the traces with 20% slag.