Energy optimization and predictive maintenance of an asphalt plant: A case study Jean Welako, Grâce N’cho, Arsène Marta, Karim Labadi, Rafik Absi and Kamel Boudjema E3S Web Conf., 353 (2022) 02004 Published online: 29 June 2022 DOI: 10.1051/e3sconf/202235302004