1. Admixtures: Classification

Try these first

1. 1.

   What are the two main types of admixtures?

   Hint

   Think about how they influence concrete.

2. 2.

   What is the main purpose of chemical admixtures?

   Hint

   There are aspects they change.

3. 3.

   What are the two main categories of admixtures?

   • Chemical and Organic
   • Chemical and Mineral
   • Inorganic and Organic

   Hint

   These categories help in understanding their functions.

4. 4.

   True or False: Mineral admixtures are generally used to modify the short-term properties of concrete.

   • True
   • False

   Hint

   Consider what properties each type influences.

5. 5.

   Determine the expected performance differences between chemical and mineral admixtures in a mass concrete project.

   Hint

   Consider both short-term and long-term properties.

6. 6.

   Evaluate a scenario where high temperatures are expected during pouring concrete. Which admixtures would you recommend and why?

   Hint

   Think about the effects of heat on concrete setting.