INVESTIGATION OF CONCRETE STRENGTH MADE WITH NANOPARTICLES AND METAKAOLIN IN ACID AND SULPHATE SOLUTION. Ianna Journal of Interdisciplinary Studies,ISSN(O):2735-9891,ISSN(P):2735-9883, [S. l.], v. 1, n. 1, p. 30–45, 2024. DOI: 10.84761/tjep6z42. Disponível em: https://unijisedu.com/index.php/ijis/article/view/37.. Acesso em: 22 dec. 2024.