13.6. Modified Bituminous Mixes

Try these first

1. 1.

   What does PMB stand for?

   Hint

   Think about what polymers do to bitumen.

2. 2.

   What is a primary benefit of WMA?

   Hint

   Consider the production processes that impact the environment.

3. 3.

   What is the primary purpose of using Polymer Modified Bitumen?

   • To improve elasticity
   • To reduce emissions
   • To increase cost

   Hint

   Think about what polymers typically do.

4. 4.

   True or False: Warm Mix Asphalt is produced at higher temperatures than conventional asphalt.

   • True
   • False

   Hint

   Consider how temperature affects both the materials and the environment.

5. 5.

   Evaluate the potential economic impact of switching from traditional asphalt to WMA in a road construction project.

   Hint

   Analyze costs over time, not just initial expenses.

6. 6.

   Propose a plan to implement CRMB in a local highway project and discuss its feasibility.

   Hint

   Think about all stakeholders involved, including environmental agencies.