Luther, R. P. Y.; Muhammad, I. Y.; Usman, N.; Abdulazeez, A. S.; Kolawole, A. M.; Olawale, S. M. EXPERIMENTAL INVESTIGATION OF THE STRENGTH PROPERTIES OF CONCRETE PRODUCED WITH VOLCANIC ASH AND METAKAOLIN AS PARTIAL REPLACEMENT OF CEMENT. FJS 2025, 9, 90 - 97.