12.1.2. Stress Relaxation and Creep

Try these first

1. 1.

   What phenomenon describes the decrease in stress over time under constant strain?

   Hint

   Think about what happens to the stress level when the material is held constant.

2. 2.

   What is the term for the increase in strain over time under constant stress?

   Hint

   Consider what happens when a weight is held indefinitely on a material.

3. 3.

   What happens to stress during stress relaxation?

   • It increases
   • It remains constant
   • It decreases

   Hint

   Think about the impact of time on applied strain.

4. 4.

   Creep is defined as _______.

   Hint

   Recall the effects of continuous load on materials.

5. 5.

   Analyze a scenario where a bituminous pavement is subjected to constant heavy truck traffic. Discuss potential outcomes related to creep and stress relaxation.

   Hint

   Think about the long-term effects on pavement integrity.

6. 6.

   Describe an approach to rehabilitate a pavement affected by significant creep and stress relaxation.

   Hint

   Consider methods that improve material properties.