Avaliação de diferentes metodologias para obtenção do módulo de resiliência de misturas asfálticas

Abstract

The Resilient Modulus (RM) is one of the main parameters used on the mechanistic-empirical asphalt pavement design in Brazil. It was recently published in Brazil a new standard for determining this parameter,the NBR 16018 (2011) from ABNT, based on the main international standards. Due to the existence of differences in testing methodology between the current Brazilian standards, tests were carried out to obtain MR in the laboratory using different methodologies. Three different mixtures of Asphalt Concrete (AC) were evaluated. It was observed that there was little variation in the average ofthe MR results. The impact of the difference in the results obtained from laboratory tests was assessed by means of a struc-tural analysis of an asphalt pavement using the computational program CAP3D. From the analysis, it was observed for the structure examined, that there was also little influence of the methodology used to obtain the MR on the structural response of the layered system.