Degradation of granulite and charnockite aggregates under simulated train loading: morphological and mechanical insights for railway ballast - Oliveira, Jheyce de Souza Moreira; Xavier, Gustavo de Castro; Costa, Kelly de Oliveira Borges da; Cherene, Mariana Gomes Pinto; Ribeiro, Rogério Pinto; Monteiro, Sergio Neves; Azevedo, Afonso Rangel Garcez de (Journal of Materials Research and Technology, 2026)