Description: The pavement subgrade refers to the layer of soil or rock that acts as the fundamental support for pavement structures. This layer is crucial for ensuring the stability and durability of paved surfaces, as it distributes the loads applied by traffic and prevents deformations or failures in the pavement. The subgrade can be composed of different types of materials, including clay, sand, gravel, or rock, and its quality and geotechnical characteristics are decisive in pavement design. A well-prepared and suitable subgrade can significantly improve the lifespan of the pavement, while an inadequate subgrade can lead to problems such as cracking, sinking, or deformation. Therefore, subgrade analysis is an essential stage in the planning and construction of roads, streets, and other paved surfaces, ensuring that the necessary load and resistance requirements are met.
