Jagba, Shadrack Aondona, Herbert Uvirsue Ijoh, and Sunday Anebu. 2026. “Effect of Used Engine Oil As a Chemical Admixture on the Properties of Normal and Pozzolanic Concrete”. FUDMA Journal of Sciences 10 (16): 707-18. https://doi.org/10.33003/fjs-2026-1016-5921.