Avaliação da penetração do ligante asfáltico e do desgaste superficial de bases imprimadas

Abstract

In Brazil, Cutback Medium Cure (CM-30) is generally used for prime coat services. In recent years there has been a greater restriction in the use of this CM-30, due to environmental issues and due to the very manipulation of the bituminous material. The objective of this article was to investigate the behavior of commercial and alternative binders for employment in prime coat services. The penetration and surface wear parameters of a primed base were evaluated, using: (i) a CM-30 commercial reference binder; (ii) an alternative binder produced in the laboratory from of the blend of a CAP with vegetable oil and (iii) two commercial binders. In general, the alternative binder presented promising results when compared to reference and commercial ligands for all parameters evaluated. It was concluded that the alternative binder may represent an environmentally more self- sustaining alternative to using vegetable oil as solvent.