5.1. Introduction

Try these first

1. 1.

   What is durability in concrete?

   Hint

   Think about factors that affect a material's lifespan.

2. 2.

   Define permeability in concrete.

   Hint

   Consider how liquids interact with solids.

3. 3.

   What is the primary measure of how fluids can pass through concrete?

   • Durability
   • Permeability
   • Strength

   Hint

   Connect this term to fluid movement.

4. 4.

   True or False: Carbonation increases the pH level of concrete.

   • True
   • False

   Hint

   Think about the chemical changes taking place.

5. 5.

   Illustrate how the interaction between permeability and carbonation can lead to significant structural damage in concrete over time.

   Hint

   Think of how moisture can exacerbate chemical reactions.

6. 6.

   Consider a coastal bridge structure exposed to harsh climate. Discuss the potential durability issues and suggest preventive measures.

   Hint

   Focus on environmental influences and material properties.