11.6.6. Use of Admixtures

Try these first

1. 1.

   What is an admixture in concrete?

   Hint

   Think of how to enhance strength or durability.

2. 2.

   Name one benefit of using plasticizers.

   Hint

   Consider why we modify the mix for easier application.

3. 3.

   What is the primary purpose of using admixtures in concrete?

   • To reduce weight
   • To enhance various properties
   • To increase water content

   Hint

   Consider what admixtures are designed to improve.

4. 4.

   True or False: Plasticizers are used to increase the water content in concrete.

   • True
   • False

   Hint

   Recall the function of plasticizers.

5. 5.

   You are tasked with designing a concrete mix for a bridge in a coastal area. What admixtures would you choose, and why?

   Hint

   Think about the environmental conditions the concrete will face.

6. 6.

   Consider a structure being built in a cold climate. What role do admixtures play in ensuring its durability?

   Hint

   Reflect on how temperature variations impact concrete.