Avaliação da Influência da Temperatura de Compactação no Desempenho de Misturas Asfálticas Quentes e Mornas a Partir de Análises Mecanicistas

Abstract

In Brazil, the hot asphalt mix, better known as CA (Asphalt Concrete), is the most traditionally used in paving due to its
good mechanical properties. The manufacture of the same by means of asphalt plants is considered a source of
environmental pollution when it is taken care of the excessive energy consumption required to reach the temperature
determined in the design of both the aggregates and binder and the asphalt mixture in its final composition, production
of pollutants. However, warm mixtures arise, which has as main characteristic the reduction of the temperature of
machining and compaction, with consequent reduction in the emission of pollutants and less impact in the scope areas
of the enterprises. Therefore, the present work aimed to evaluate the influence of compaction temperature on the fatigue
performance of hot and warm asphalt mixtures, through mechanistic analyzes by SisPav Software and calculations, to
determine the performance of pavement fatigue. It was observed that even with the reduction of compaction
temperature the warm mixes obtained better results, and the hot mixtures presented a remarkable reduction of fatigue
performance when compacted at non-ideal temperatures, resulting in early cracking of the pavement.