Speaker
Description
Abstract. Due to the oil prices and the consequent impact on the cost of asphalt, importing this product has been an alternative in Brazil. The imported asphalts are packaged in the form of blocks in a solid state, and their management for use represents a challenge to face. This study presents a methodology developed in Brazil for using imported asphalt in blocks. Also, the performance prediction for permanent deformation of an imported asphalt modified by styrene-butadiene-styrene (SBS) was compared with a national one. The high-temperature performance grade parameter and Multiple Stress Creep Recovery (MSCR) tests were performed. The imported asphalt presented PG 82-XX, while the national one presented PG 76-XX. The MSCR test results showed that the imported asphalt could perform better than the national one for permanent deformation. However, other tests are necessary to identify the effective contribution of imported asphalt on asphalt mixture performance. In addition, the potential environmental impacts of using this material must be considered in the analysis. The developed methodology proved suitable and can be used for other importers of asphalt in blocks.
