Which of the following characteristic is high for flexible pavements in relation to rigid pavements?

Explanation:

Flexible vs. Rigid Pavements

Flexible pavements and rigid pavements have different characteristics due to their distinct structural properties and material compositions. In this context, we are analyzing which characteristic is high for flexible pavements in relation to rigid pavements.

• Maintenance Cost

• Life Span

• Flexural Strength

• Force of Friction

Analyzing the Given Options

1. "Maintenance cost." (Characteristic)

   • Flexible pavements generally have higher maintenance costs compared to rigid pavements due to their susceptibility to deformation under traffic loads and environmental conditions.

   • They require more frequent repairs and resurfacing.

2. "Life span." (NOT a characteristic)

   • Flexible pavements typically have a shorter life span compared to rigid pavements due to their lower structural capacity and durability.

   • Rigid pavements, such as concrete, generally last longer with less maintenance.

3. "Flexural strength." (NOT a characteristic)

   • Rigid pavements have higher flexural strength due to the concrete used in their construction.

   • Flexible pavements rely more on their layered structure to distribute loads, rather than high flexural strength.

4. "Force of friction." (NOT a characteristic)

   • Force of friction is not significantly different between flexible and rigid pavements as it depends on the surface texture and material.

   • Both types of pavements can be designed to provide adequate friction for vehicle safety.