Estudo das propriedades físicas do ligante asfáltico CAP 50/7- modificado por adição de lignina proveniente de pinus.

Abstract

The highways allow the economic integration between the regions of the country and provide great benefits to society, being one of the main transport systems used for the displacement of people and goods. Therefore, it is important that this infrastructure be maintained adequately and satisfactorily, so that the problems related to it do not interfere in the operational costs of vehicles, nor raise the prices of services and goods traded. Thus, this study had as main objective to evaluate the physical properties of the modified asphaltic binder by addition of lignin from pine. Softening point, viscosity and penetration tests were performed for the lignin modified binder at 3%, 6% and 9%, before and after aging. It was observed that the content of 3% of lignin gave a higher resistance and a tendency to less wear with the aging, for the content of 6% of lignin it is recommended to use for places with high temperature variations and, for the content of 9 % lignin obtained satisfactory resistance results.