12.6.2. Moisture Sensitivity Tests

Try these first

1. 1.

   What is the purpose of the Tensile Strength Ratio test?

   Hint

   Think about the relationship between water and the mix's strength.

2. 2.

   What type of damage can moisture cause in bituminous mixes?

   Hint

   Consider the impact of water on the structural integrity.

3. 3.

   What does the Tensile Strength Ratio test measure?

   • The cost of the mix
   • The strength of the mix after water exposure
   • The temperature stability of the mix

   Hint

   Consider why water exposure would be important for assessing the mix.

4. 4.

   True or False: A low TSR value indicates that a pavement mix is highly resistant to moisture damage.

   • True
   • False

   Hint

   Think about what low values represent in terms of performance.

5. 5.

   You have a bituminous mix with a TSR of 0.75. Discuss the potential implications for road performance and suggest remedial actions.

   Hint

   Consider the risks and potential improvements to the mix.

6. 6.

   Design a simple experiment to evaluate moisture sensitivity using the Boiling Water Test and outline your expected results.

   Hint

   Focus on the essential steps of the test and what results indicate.