11.3.2. Physical Weathering

Try these first

1. 1.

   What does a freeze-thaw cycle do to concrete?

   Hint

   Think about what happens to water when it freezes.

2. 2.

   Define abrasion in the context of concrete.

   Hint

   Consider how rough surfaces might affect smooth materials.

3. 3.

   What is the primary concern related to freeze-thaw cycles?

   • A) Water freezing
   • B) Spalling
   • C) Abrasion

   Hint

   What happens after water freezes in structures?

4. 4.

   True or False: Abrasion only occurs in hydraulic structures.

   • True
   • False

   Hint

   Think of other scenarios where surfaces wear down.

5. 5.

   Given a concrete structure that has suffered from prolonged exposure to freeze-thaw cycles, outline a plan to enhance its durability against such weathering.

   Hint

   Consider protective measures for environmental influences.

6. 6.

   A concrete pavement has shown significant abrasion wear due to heavy vehicle trafficking. Propose modifications to rectify and prevent further deterioration.

   Hint

   Think about how to strengthen the surface and the mix.