THE ENGINEERING CHARACTERISTICS OF BLACK COTTON SOIL TREATED WITH CORN STRAW ASH. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 6, n. 10, p. 74–80, 2019. Disponível em: https://www.ijaerd.org/index.php/IJAERD/article/view/4427. Acesso em: 9 sep. 2025.