REVIEW OF WARM MIX ASPHALT NEW TECHNOLOGIES

Abstract

ABSTRACT Since signing the Kyoto Protocol, efforts in the search of processes to slow climate change down have been increased. In the case of the manufacture of bituminous mixtures, new products and procedures that allow a significant reduction of emissions of greenhouse fumes and consumption of energy resources, keeping the demanded benefits, have been developed. However, there is still some reluctance to use them, due to the ignorance of the manufacturers about the changes needed in the asphalt plants to adapt their technology, as well as about the economic consequences of their use. Therefore, this paper shows an analysis of the key technologies used to manufacture mixtures at low temperature that exist nowadays. Changes in plants to incorporate these new technologies are detailed, and an economical and environmental balance that compares the manufacture of these mixes with the traditional hot mixes is carried out. Everything with the aim of encouraging producers and Authorities to employ these new products, both effective, environmentally sustainable and profitable.