Characterization of the fiber-cement with inclusion of natural fibers by NMR relaxometry - Tsuchida, Jefferson Esquina; Silva, Rodrigo Oliveira; Bonagamba, Tito José; Santos, Sérgio Francisco dos; Teixeira, Ronaldo Soares; Savastano Junior, Holmer (Encontro Nacional de Física da Matéria Condensada, 2013)