This research concentrates on the developmemnt of sustainable formulation of an environmentally friendly structural composite using an innovative approach, incorporating recycled materials. The primary aim of this research is to utilize the industrial wastes as re-circulated input to make structural materials without using new raw materials. Waste plastic, tanned waste leather, and waste glass fiber-reinforced plastic (GFRP) additives. The fabrication employs the hand layup method, and the composite undergoes comprehensive characterization following ASTM standards. According to the results, the composite designation “D” emerged as the most mechanically robust, with a tensile strength of 142 MPa, flexural strength of 195 MPa, compression strength of 156 MPa, interlaminar shear strength of 45 MPa, rail shear strength of 31 MPa, and an impact energy of 4.94 J. Concerning creep behavior, the “E” designation demonstrates minimal creep strain, recording values of 0.0057, 0.0076, and 0.0123 for 5000 s, 10000 s, and 15000 s time frame, respectively. This indicated the addition of 5 vol. % of GFRP additives improved the load-bearing effect. In terms of flammability, the “E” designation exhibits noteworthy flame resistance, with a low flame propagation speed of 10.83 mm/min. Additionally, the “E” designation demonstrates stable hydrophobic behavior, revealing a minimal water absorption percentage of 0.001. This study showcases the potential of the developed composite, emphasizing its mechanical strength, resistance to creep, flame retardancy, and hydrophobic properties, positioning it as an environmentally responsible and versatile material for diverse applications.
