18.2. Types of Joints in Concrete Pavements

Try these first

1. 1.

   What type of joint allows for thermal expansion in concrete?

   Hint

   Think of how concrete reacts to heat.

2. 2.

   Which joint is used to control cracking due to shrinkage?

   Hint

   Relate it to the drying process of concrete.

3. 3.

   What is the main function of expansion joints in concrete pavements?

   • Allow contraction
   • Accommodate expansion
   • Control construction interruptions

   Hint

   Think about how concrete behaves when it gets hot.

4. 4.

   True or False: Contraction joints can cause random cracking in a concrete slab.

   • True
   • False

   Hint

   Recall the purpose of contraction joints.

5. 5.

   Design a specification sheet for a large concrete pavement that incorporates all four joint types. Include guidelines for their placement.

   Hint

   Think about areas where temperature fluctuations are significant.

6. 6.

   Evaluate the consequences of neglecting to incorporate warping joints in your concrete slab design.

   Hint

   Consider how changing temperatures can cause physical deformation.