Leaching and mechanical performance of rubberized warm mix asphalt modified through the chemical treatment of hazardous waste materials

•Modifiers used are treated waste polyethylene (WP) and waste engine oil (WEO).•Using waste hazardous additives satisfied storage stability of rubberized bitumen.•Improvement of rutting and moisture resistance of modified warm mix asphalt (WMA).•WMAs encapsulate hazardous materials, and protect the environment from pollution.•Building a sustainable pavement by decreasing waste disposal and fuel consumption.