Nguyen Hoang Tung, Sok Heang, Khuc Thien Thanh. Concrete elastic modulus effects on cracked flexural stiffness reduction factor of RC beams. JOMC [Internet]. 2026 May 22 [cited 2026 Jun. 10];16(01):Page 90 - Page 100. Available from: https://ojs.jomc.vn/index.php/en/article/view/1246