18.2.2. Contraction Joints

Try these first

1. 1.

   What is the primary purpose of contraction joints in concrete?

   Hint

   Think about the stresses concrete undergoes while curing.

2. 2.

   What happens if contraction joints are not used?

   Hint

   Consider what would happen to a material that shrinks without any breaks.

3. 3.

   What is the main purpose of contraction joints in pavements?

   • To allow for expansion
   • To control cracking
   • To improve aesthetics

   Hint

   Think about why materials need breaks during curing.

4. 4.

   True or False: Contraction joints can help improve the aesthetic appearance of concrete pavements.

   • True
   • False

   Hint

   Focus on the functional aspect of contraction joints.

5. 5.

   Imagine a concrete pavement with incorrect joint spacing. Predict the potential flaws that can occur and how they can be resolved.

   Hint

   Consider what happens with too much pressure on a rigid structure.

6. 6.

   Create a maintenance schedule for a newly constructed concrete pavement with contraction joints.

   Hint

   Think of how preventative maintenance can extend the life of the pavement.