6.2.4. Effect on Durability

Try these first

1. 1.

   What is efflorescence?

   Hint

   Think about what you see on a wet wall.

2. 2.

   Name one impurity that can affect concrete durability.

   Hint

   It starts with an 'S'.

3. 3.

   Which of the following can significantly affect the durability of concrete?

   • Quality of aggregates
   • Water impurities
   • Curing methods

   Hint

   Think about what you mix with concrete.

4. 4.

   True or False: Efflorescence is a sign that concrete is healthy.

   • True
   • False

   Hint

   Is something appearing on the surface a good sign?

5. 5.

   Evaluate the long-term effects of using seawater in concrete mixing for coastal structures and suggest best practices.

   Hint

   Consider the significance of water quality and its implications.

6. 6.

   Propose a treatment plan for contaminated groundwater before use in a large construction project.

   Hint

   Think about steps to purify water similar to filtering coffee.