18.7. Sealant Installation and Construction Practices

Try these first

1. 1.

   What is the purpose of cleaning joint faces before sealant application?

   Hint

   Think about what happens if a surface has dirt.

2. 2.

   What material is commonly used for backer rods?

   Hint

   It's a type of compressible foam.

3. 3.

   Why is joint preparation important?

   • To improve aesthetics
   • To ensure sealant adhesion
   • To reduce cost

   Hint

   Consider what happens if surfaces are dirty.

4. 4.

   True or False: A backer rod ensures that sealant bonds at the base.

   • True
   • False

   Hint

   Think about its role in sealant geometry.

5. 5.

   Discuss the step-by-step processes involved in joint preparation and how failure to adhere could affect pavement performance.

   Hint

   What are the main components involved in preparation?

6. 6.

   Analyze a scenario where improper sealant application occurs. What might be the consequences and recommended remedial actions?

   Hint

   Consider how environmental conditions could also play a role.