Effects of natural weathering on microstructure and mineral composition of cementitious roofing tiles reinforced with fique fibre - Tonoli, Gustavo Henrique Denzin; Santos, S. F.; Savastano Júnior, Holmer; Delvasto, S.; Mejía de Gutiérrez, R.; Murphy, M. del M. L. de (Cement & Concrete Composites, 2011)