Avaliação do uso de escória de aciaria em blocos intertravados de concreto para pavimentação

Abstract

In order to minimize environmental and management problems, a possible use for these slags is as aggregate for concrete paving blocks. The objective of this paper is to evaluate the use of BOF steel slag in partial substitution of coarse aggregate (gravel) on the production of concrete interlocking pavers. Paver specimens with 0%, 30% and 50% of slag substitution in volume were cast and had their dimensions, compressive strength and abrasion resistance measured, besides the consistence test in fresh state. The results for visual evaluation and dimensional analysis fit the standard, but did not reach normative values for compressive strength at 7 days of age for paving. Although, the results also showed that the compressive strength of the specimens has increased as the substitution rate also increased, until the limit of 50%, compared to reference. This fact demonstrates the potential use of a byproduct of the steel industry currently seen as a waste, now as a construction material.