9.5. Permeability of Concrete

Try these first

1. 1.

   What does permeability in concrete refer to?

   Hint

   Think about how easily water can pass through.

2. 2.

   What is one factor that affects the permeability of concrete?

   Hint

   Consider what happens when you add more water.

3. 3.

   What does permeability in concrete allow?

   • Increased strength
   • Fluid penetration
   • Diminished curing

   Hint

   Think about what happens when it rains on concrete.

4. 4.

   True or False: Lower water-cement ratios generally lead to higher permeability in concrete.

   • True
   • False

   Hint

   Consider how water affects the mix.

5. 5.

   Given a concrete mix with a water-cement ratio of 0.7 and another with 0.4, analyze how the two mixes would perform in terms of permeability.

   Hint

   Consider how water affects the structure of concrete.

6. 6.

   Design a test plan to assess the permeability of a new concrete mix. Include the types of tests you would use and justify why they are appropriate.

   Hint

   Think about what tests are practical and show results quickly.