Friction reduction in pipe flow of coarse slurry by fines addition – experimental study Václav Matoušek, Zdeněk Chára, Jiří Konfršt, Jan Krupička and Jakub Novotný EPJ Web of Conf., 299 (2024) 01027 Published online: 04 July 2024 DOI: 10.1051/epjconf/202429901027