​Reinforcement of the sub-base with geosynthetics is an effective technique used to improve the performance and durability of pavement and foundation systems. By placing geosynthetic materials (such as geogrids or geotextiles) within or at the interface of the sub-base layer, load distribution is enhanced and vertical stresses transmitted to the subgrade are reduced. This reinforcement limits lateral spreading of aggregates, increases bearing capacity, and improves overall stiffness, leading to reduced rutting and deformation under repeated loading. As a result, geosynthetic-reinforced sub-bases allow for thinner pavement sections, extended service life, and improved performance, especially over weak or soft subgrade soils.