Flexural Strength of Hybrid Beams Containing Reactive Powder Concrete and Conventional Concrete. J. eng. sustain. dev. [Internet]. 2014 Sep. 1 [cited 2024 May 17];18(5):61-9. Available from: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/947