Improving The Voided Reinforced Concrete Beams Behavior by Strenthining The Compression Zone Concrete Using Polyvinyl Alcohol. JUBES [Internet]. 2018 Feb. 1 [cited 2025 May 3];26(3):307-1. Available from: https://www.journalofbabylon.com/index.php/JUBES/article/view/1124