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G. Abtan Y, T. Jaber H. FLEXURAL BEHAVIOR OF HYBRID REINFORCED CONCRETE BEAMS COMBINING ULTRA HIGH STRENGTH CONCRETE AND PORECILENITE AGGREGATE LIGHTWEIGHT CONCRETE. J. eng. sustain. dev. 2019;23(6):178-193. Accessed May 10, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/190