Análise de comportamento de mistura asfáltica morna

Abstract

In recent years environmental issues have become increasingly prominent on the world stage. The road sector, engaged in contributing to the reduction of fuel consumption and the consequent emission of greenhouse gases, started to foster the creation and application of technologies for existing paving methods. One of the alternatives found was the reduction of the machining temperatures of asphalt mixtures, by performing warm mixtures, where they are performed about 10ºC to 50ºC below the conventional temperature, and the reduction depends on which technique will be used to produce over there. The objective of this research is to analyze the behavior of using warm mix asphalt obtained from the technique of incorporating surfactant chemical additives into the asphalt binder. For this purpose two mixtures were formulated, one hot and the other warm, with a reduction of 30ºC in the heating temperature of the aggregates and the mixture, for five different levels of petroleum asphalt cement, according to Marshall method. Experimental results of both mixtures were analyzed and compared, and indicated similar mechanical performance, thus confirming the feasibility of using warm mix asphalt to replace conventional hot mixtures.