Florida DOT Concrete Batchman/Operator Practice Exam

Which cement type is generalized for use when sulfate resistance is desired?

1. Type I

2. Type II

3. Type III

4. Type IP

The correct answer is: Type II

The choice of Type II cement is appropriate when sulfate resistance is desired because this type of cement is specifically formulated to provide moderate resistance to sulfate attack. This characteristic is particularly important in areas where soils or groundwater have a high sulfate content, which can lead to damage in concrete structures over time. Type II cement has a lower amount of tricalcium aluminate (C3A) compared to Type I cement, which contributes to its enhanced sulfate resistance. By mitigating the potential for chemical reactions that can lead to expansion and cracking in the presence of sulfates, Type II cement helps to prolong the durability and performance of concrete in challenging environmental conditions. In contrast, other types of cement either do not emphasize sulfate resistance or may not provide the same level of durability required for sulfate-rich environments. Understanding the specific properties of each type of cement is crucial for selecting the right material based on the environmental conditions the concrete will face.