The specific type of road surface described is flexible pavement. This type of pavement is constructed from multiple distinct layers designed to work together. At the bottom, it rests on the prepared natural ground, known as the subgrade. Above the subgrade are typically one or more layers of granular material, such as compacted crushed stone or gravel, forming the subbase layer and the base layer. These granular layers provide foundational strength and contribute significantly to spreading the lo....
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