10.5.6. Specific Gravity Test

Try these first

1. 1.

   What does specific gravity measure?

   Hint

   Think about density in relation to water.

2. 2.

   Why is specific gravity important for bituminous binders?

   Hint

   Consider how mixing materials works.

3. 3.

   What does specific gravity compare?

   • A substance to air
   • A substance to water
   • A substance to oil

   Hint

   Remember the reference substance.

4. 4.

   True or False: A higher specific gravity means the material is lighter.

   • True
   • False

   Hint

   Think about what density means.

5. 5.

   A specific gravity test results in a displacement of 300 cm³ with a sample weight of 600 grams. Calculate the specific gravity.

   Hint

   Use the density formula.

6. 6.

   Explain the potential long-term impacts of using a binder with a specific gravity significantly different from standard values.

   Hint

   Think about performance and maintenance needs.