Geogrids are synthetic materials used in civil engineering and construction to reinforce soil and improve stability. They are typically made from polymers and have a grid-like structure that helps distribute loads over a larger area, reducing soil deformation and increasing the strength of the ground. These materials are commonly used in applications such as road construction, retaining walls, and embankments. By providing additional support, geogrids can enhance the performance of structures and extend their lifespan, making them a valuable tool in modern engineering practices.