Closed-Form SWCC Functions for Granular Mixtures Emőke Imre, Ágnes Bálint, Tibor Firgi, Delphin Kabey Mwinken, Giulia Guida, Vijay P. Singh and Kálmán Rajkai E3S Web Conf., 642 (2025) 03035 Published online: 14 August 2025 DOI: 10.1051/e3sconf/202564203035