Effect of filler-ash on the properties of epoxy resin composite Albert Zalyatdinov, Rauza Sadreeva, Denis Rechenko, Efim Burlutsky and Ilshat Gareev E3S Web Conf., 431 (2023) 03013 Published online: 13 October 2023 DOI: 10.1051/e3sconf/202343103013