AG Mechanics CDE Practice Exam

The process by which concrete hardens by adding water is called?

1. Dehydration

2. Evaporation

3. Hydration

4. Oxidation

The correct answer is: Dehydration

The correct answer is not A, Dehydration. Dehydration refers to the process of removing water from a substance. In the context of concrete, the process by which concrete hardens by adding water is called hydration. When water is added to the concrete mixture, a chemical reaction occurs between the water and the cement, forming strong bonds that contribute to the hardening of the concrete. This process is essential for the concrete to gain strength and durability over time.