6.12.3. Hydraulic Reaction (GGBS)

Try these first

1. 1.

   What does GGBS stand for?

   Hint

   Think about its source and its effect on concrete.

2. 2.

   What is formed when GGBS reacts with water?

   Hint

   Recall the primary compounds produced.

3. 3.

   What is GGBS primarily used for in concrete?

   • To enhance workability
   • To improve strength and durability
   • To change the color

   Hint

   Consider the main benefits of GGBS.

4. 4.

   True or False: GGBS can help reduce the heat of hydration.

   • True
   • False

   Hint

   Think about its application in massive structures.

5. 5.

   Calculate the potential compressive strength improvement when 30% of the cement in a concrete mix is replaced with GGBS, considering typical performance data.

   Hint

   Look for strength improvement data in concrete literature.

6. 6.

   Discuss the long-term effects of using GGBS on concrete exposed to harsh marine environments.

   Hint

   Consider the benefits of lower permeability and chemical resistance.