DANTAS, T. A.; DANTAS, Tayná Araújo.
Abstract:
Civil construction is one of the most important sectors of the economy, being essential to the
development of the country, but, consequently, it is considered one of the sectors that most
consume natural resources, from the production of inputs used until the execution of the work
and its operation. In this sequence, Brazil is recognized worldwide in the production and
commercialization of ornamental rocks, which during the primary processing transform almost
30% of the blocks, by volume, into fine residues. The objective of this research was to evaluate
the practical application of ornamental rock processing residue (RBRO) in asphalt mixtures,
acting as filler material. For this purpose, studies were carried out on the mechanical properties
of an asphalt mixture with CAP 50/70 and using different RBRO contents as a filler, replacing
the lime content, and analyzing on the basis of results obtained for mixtures with addition of
hydrated lime. In general, mixtures with RBRO addition were shown to be viable for use in
pavement works, since the normative values were exceeded and the results obtained were
equivalent to those of the reference mixture. It is concluded that the analysis of the resistance
to permanent deformation was determinant to conclude that the 2% RBRO content in the
mixture presents better performance.
