RAO, D. D. K. .; KUMAR, A. B. A LABORATORY INVESTIGATION ON THE EFFICIENCY OF EXPANSIVE SOIL TREATED WITH RICE HUSK ASH AND FERRIC CHLORIDE AS SUB GRADE FOR FLEXIBLE PAVEMENTS. International Journal of Technical Innovation in Modern Engineering & Science, [S. l.], v. 5, n. 12, p. 12–23, 2019. Disponível em: https://ijtimes.com/index.php/ijtimes/article/view/17. Acesso em: 27 sep. 2024.