Influence of the Use of Waste Generated by Thermoelectric Power Plant on Sustainable Asphalt Mixes

Abstract

The main objective of this research is to evaluate the influence of using waste generated by a coal-burning thermoelectric power plant in asphalt mixes. The matrices called fly ash, bottom ash and a composition with 50 % of each type were analyzed, and compared to conventional crushed gneissic rock particles, all used as filling material (filler) at 6.0 % passing through the mesh opening 0.075 mm, in the granulometric curves of asphalt mixes. The matrices studied are technically viable for use in asphalt mixes, creating the potential for large-scale market use of bottom ash, especially in the southern region of the State of Santa Catarina. Thus, to benefit more directly from the proximity to the source producing these inputs, the South region can explore the use of power plant waste, given the easy access and shorter transport distances.