Shaker Hashemi

The objective of this study is to investigate the behavior of Glass Fiber Reinforced Geogrid (GFRG) mesh confined concrete, experimentally. The utilized mesh in this study has openings of 20 mm, weighing 240 gr/m2, and a tensile strength of 60 KN/m. For this research, 42 standard cylindrical concrete specimens with a diameter of 150 mm and a height of 300 mm were constructed. These specimens were created in both unconfined and confined states, with GFRG mesh confined concrete. The confined specimens included meshes with different hoop layer counts (1, 1.5, and 2 layers) and concrete covers of 10 and 20 mm. After fabrication and curing, the specimens underwent testing, and the behavior under various confinement layers of samples and concrete covers was evaluated in terms of ductility, energy absorption, and compressive strength under applied loads. The results revealed that the incorporation of GFRG mesh confined concrete to induce confinement leads to a slight decrease of approximately 3% in confinement strength at 28 days. However, ductility and post-cracking softening behavior of the specimens improved, resulting in an increase of about 20% in energy absorption. Through specimen analysis, it was determined that ductility and energy absorption are directly related to the number of confinement layers.