A geotextile is a versatile, permeable synthetic or natural fiber material engineered to enhance soil stability, filtration, drainage, and separation in civil engineering, construction, and environmental projects. Classified into three main types—non-woven geotextiles (made from bonded fibers for filtration and drainage), woven geotextiles (created from interlaced yarns for high tensile strength and separation), and knitted geotextiles (flexible options for specific contour applications)—it adapts to diverse project needs with exceptional durability. Its key functions include separating different soil layers (preventing mixing of sand and gravel, for example) to maintain structural integrity, filtering water to retain soil particles while allowing proper drainage, reinforcing weak soils to distribute loads (ideal for roadbeds and embankments), and protecting other geomaterials like geomembranes from punctures. Geotextiles are widely used in critical applications such as road and highway construction (extending pavement lifespan by reducing soil deformation), railway track beds (enhancing stability and drainage), landfills (as a protective layer above liners), coastal engineering (for erosion control in seawalls and breakwaters), agricultural projects (managing irrigation and soil conservation), and wastewater treatment (filtering sediment in drainage systems). Unlike traditional soil stabilization methods (e.g., using concrete or natural aggregates), geotextiles are lightweight, cost-effective, easy to install (even on uneven terrain), and environmentally friendly—reducing the need for excessive excavation and raw material use. They also meet global standards (e.g., ASTM, ISO) to ensure consistent quality and performance. Whether for improving infrastructure longevity, preventing soil erosion, or optimizing drainage, a high-quality geotextile is a foundational component in modern engineering, delivering reliable, sustainable solutions across industries.