Ngekpe, B. E., J. Burabari, and C. Ukpaka. “Predictive Models of Compressive Strength Concrete Produced from Recycled Concrete Aggregate”. International Journal For Research In Mechanical & Civil Engineering 4, no. 4 (April 30, 2018): 33–45. Accessed May 19, 2024. https://gnpublication.org/index.php/mce/article/view/381.