Which type of pavement is characterized as a strong concrete slab?

Rigid pavement is characterized as a strong concrete slab due to its construction with cement concrete, which provides a high level of strength and load-bearing capacity. This type of pavement is typically designed to distribute loads over a wide area of subgrade soil, thereby minimizing the stress on the underlying layers. Rigid pavements are often used in highway and airport runways because they can handle heavy loads and exhibit durability over an extended period.

The rigid nature of this type of pavement means it does not deform under loads, maintaining its structural integrity much more effectively than other types. It is commonly constructed using portland cement concrete, which has a high compressive strength that significantly contributes to its overall resilience against cracking and deformation.

In contrast, flexible pavements are made from asphalt and rely on a layered system that can deform slightly under load, which makes them less rigid than concrete slabs. Composite pavements combine both flexible and rigid materials but do not exclusively represent the characteristics of a strong concrete slab. Precast pavement refers to concrete slabs manufactured off-site and then transported to the site for installation but still falls under the category of rigid pavement if made from concrete.

Therefore, rigid pavement stands out as the correct answer because its defining feature is the use of strong concrete slabs designed to bear