Saleh Al-Attar T, Salah Mehdi B, Frayyeh Hattab M. EFFECT OF EXTERNAL SULPHATES ON PROPERTIES OF LIME-POZOLANA CONCRETE. J. eng. sustain. dev. 2019;23(5):42-54. Accessed May 10, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/203