16.9.2. Joint Sealants

Try these first

1. 1.

   What is the purpose of joint sealants in concrete pavements?

   Hint

   Think about what damage water can do.

2. 2.

   Name one type of joint sealant.

   Hint

   Remember the acronym HPS.

3. 3.

   What is the main function of joint sealants?

   • Prevent water ingress
   • Increase load capacity
   • Reduce cracks
   • Enhance aesthetics

   Hint

   Think about what can harm concrete pavements.

4. 4.

   Hot-poured rubber sealants are applied in which state?

   • True
   • False

   Hint

   Think about how you would apply something that needs to be liquid first.

5. 5.

   You are tasked with maintaining a highway that exhibits several aging joints. Develop a presentation explaining the importance of selecting the right joint sealant based on environmental factors and joint type.

   Hint

   Consider the unique attributes of each sealant type.

6. 6.

   Analyze the cost-benefit of using high-performance polysulphide sealants versus standard sealants in a busy urban traffic area.

   Hint

   Think about the long-term savings versus initial expenses.