Sustainable practices in asphalt pavements and their possible applications in the Brazilian Market

The construction and maintenance of pavements consumes a large quantity of resources. The scarcity of these resources and, increase in prices, suggests that new techniques need be employed. The transition to a circular economy has been a solution for economic and environmental issues, to make resources available in the future. In road engineering, many studies point to the need for a better standard of sustainability, with technical and economic feasibility. The objective of this work is to present the techniques available that represents some of the most widely used sustainable practices in the world, applied technology, its advantages, and disadvantages and, its market share, that extend the life cycle of pavements, reducing the consumption of aggregates and binders using recycled materials, reducing the production temperature, which implies less consumption of fossil fuels and emission, less work and travel time, promoting on-site techniques and avoiding the final disposal of waste in landfills. Three sustainable practices were analysed: maintenance, use of recycled materials and technologies of warm asphalt mixes. This work concludes that there is a lack in current solid waste policy in the country and the current paving standards that need be reviewed focusing on sustainability, especially regarding recycling processes.