2. Permeability of Concrete

Try these first

1. 1.

   What is the definition of permeability in concrete?

   Hint

   Think about how water interacts with surfaces.

2. 2.

   Name one mechanism of permeability.

   Hint

   Consider how water moves through small spaces.

3. 3.

   What does permeability measure in concrete?

   • Fluid movement
   • Strength
   • Weight

   Hint

   Consider what it means for materials to allow or resist fluid passage.

4. 4.

   True or False: A higher water-cement ratio decreases permeability.

   • True
   • False

   Hint

   Think about how the composition of concrete affects its properties.

5. 5.

   A concrete sample has a water-cement ratio of 0.65 and shows significant chloride ion penetration during testing. Discuss how this impacts the durability of structures made from this concrete.

   Hint

   Correlate the water-cement ratio with fluid ingress.

6. 6.

   Evaluate the role of curing techniques in controlling the permeability of concrete, providing examples of various methods.

   Hint

   Think about how moisture retention affects the concrete curing process.