15.1. Chloride Penetration Resistance

Try these first

1. 1.

   What is chloride penetration resistance?

   Hint

   Think about how it protects steel.

2. 2.

   Name one supplementary cementitious material.

   Hint

   It’s often used in concrete mixes.

3. 3.

   What does chloride penetration resistance help protect in concrete?

   • Surface finish
   • Steel reinforcement
   • Flexural strength

   Hint

   Think about what steel inside concrete is vulnerable to.

4. 4.

   True or False: Higher permeability leads to better chloride resistance.

   • True
   • False

   Hint

   Remember how liquids interact with concrete.

5. 5.

   Design a mix for a concrete structure in a coastal city. Explain your reasoning for the choice of materials and the expected resistance to chloride penetration.

   Hint

   Focus on the environmental impacts on concrete.

6. 6.

   Evaluate the impact of increasing coarse aggregate size on chloride penetration resistance.

   Hint

   Consider what happens to packing density.