14.3.2. Moisture Susceptibility Tests

Try these first

1. 1.

   What does the Tensile Strength Ratio measure?

   Hint

   Think about their strength when exposed to moisture.

2. 2.

   What does the Static Immersion Test assess?

   Hint

   Recall what happens to bitumen in water.

3. 3.

   What does TSR stand for?

   • Tensile Strength Ratio
   • Total Shear Resistance
   • Thermal Strength Range

   Hint

   It evaluates strength under wet conditions.

4. 4.

   True or False: The Boiling Water Test visually measures how much moisture a mix can endure.

   • True
   • False

   Hint

   Think about the implications of visual stripping.

5. 5.

   A new bituminous mix has a TSR of 0.75. What actions would you recommend to improve its moisture resistance?

   Hint

   Think about how to enhance adhesion and reduce moisture penetration.

6. 6.

   After performing the Boiling Water Test, you observe severe stripping of aggregates. What could be the root cause?

   Hint

   Reflect on how each factor affects bonding.