DR. R.R. SINGH; MISS. AASTHA. EFFECT OF FLY ASH AND COPPER SLAG ON MECHANICAL PROPERTIES OF CONCRETE. International Journal of Innovations in Engineering Research and Technology, Maharashatra, India, p. 1–4, 2021. Disponível em: https://repo.ijiert.org/index.php/ijiert/article/view/1686. Acesso em: 1 feb. 2026.