Types of Pavements:
• Rigid pavement (Concrete Slab) The wearing surface of a rigid pavement is usually constructed of Portland cement concrete such that it acts like a beam over any irregularities in the underlying supporting material.
• Flexible pavement (Asphalt Concrete) The wearing surface of flexible pavements is usually constructed of bituminous materials such that they remain in contact with the underlying material even when minor irregularities occur.
Flexible pavements usually consist of a bituminous surface over a layer of granular material and a layer of a suitable mixture of coarse and fine materials. Traffic loads are transferred by the wearing surface to the underlying supporting materials through the interlocking of aggregate, the frictional effect of granular materials, and cohesion of fine materials.
