23.2.1. Cutback bitumen

Try these first

1. 1.

   What is cutback bitumen?

   Hint

   Think about the purpose of decreasing viscosity.

2. 2.

   Name one solvent used in cutback bitumen.

   Hint

   Recall the list of ingredients we discussed.

3. 3.

   What is the primary purpose of cutback bitumen?

   • To increase viscosity
   • To reduce viscosity
   • To preserve aggregates

   Hint

   Think about the main function of solvents in bitumen.

4. 4.

   True or False: Cutback bitumen is preferred only in hot weather.

   • True
   • False

   Hint

   Consider the types of applications discussed.

5. 5.

   Create a construction plan for a cold climate location specifying when to use cutback versus standard bitumen, detailing the reasons for each choice.

   Hint

   Consider the properties of each type.

6. 6.

   Evaluate the potential environmental impacts and benefits of using cutback bitumen over standard bitumen in construction.

   Hint

   Think about both production and application phases.