“Load-Deflection Behavior of Hybrid Beams Containing Reactive Powder Concrete and Conventional Concrete”, J. eng. sustain. dev., vol. 18, no. 3, pp. 118–147, May 2014, Accessed: May 11, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/895