Massachusetts Construction Supervisor License (CSL) Practice Test

Which type of Portland cement is preferred for areas requiring light sulfate resistance?

1. Type 1 Portland cement

2. Type 2 Portland cement

3. Type 3 Portland cement

4. Type 4 Portland cement

The correct answer is: Type 2 Portland cement

Type 2 Portland cement is specifically formulated to provide moderate resistance to sulfate attacks, making it suitable for environments where light sulfate exposure is a concern. This type of cement contains a lower percentage of tricalcium aluminate compared to Type 1, which helps improve its performance in sulfate-rich environments, such as those found near soil or groundwater with low levels of sulfate. In contrast, Type 1 Portland cement is a general-purpose cement without any special properties for sulfate resistance, making it less suitable for such applications. Type 3 Portland cement is designed for high early strength and does not focus on sulfate resistance, while Type 4 Portland cement is formulated for low heat of hydration and is not specifically tailored for areas with sulfate exposure. Therefore, the preferred option for light sulfate resistance clearly aligns with the characteristics of Type 2 Portland cement.