N. Qader, D., D. Merie, H. and N. Abdulhaleem, K. 2025. Impact of Incorporating Plastic Fibers, Walnut Shells, and Tire Rubber Fibers on the Mechanical Properties of Concrete. Electronic Journal of Structural Engineering. 25, 1 (Mar. 2025), 19–24. DOI:https://doi.org/10.56748/ejse.24738.