Florida DOT Concrete Batchman/Operator Practice Exam

Calcium Nitrite is typically used in what type of environments?

1. Moderately aggressive

2. Neutral

3. Non-aggressive

4. Extremely aggressive

The correct answer is: Extremely aggressive

Calcium Nitrite is primarily used in extremely aggressive environments, particularly where corrosion is a significant concern. This compound serves as a corrosion inhibitor which helps to protect reinforcing steel in concrete structures exposed to harsh conditions such as de-icing salts or seawater. The aggressive nature of these environments can lead to substantial corrosion of steel reinforcement if not properly mitigated. In extremely aggressive situations, adding Calcium Nitrite to the concrete mix enhances its durability and longevity, making it crucial for infrastructure such as bridges and roadways that face constant exposure to stressors that could compromise their structural integrity. This use underscores the importance of selecting appropriate additives based on environmental challenges to maintain the performance and safety of concrete structures over their intended lifespan.