What characteristic does Type 2 cement possess compared to Type 1 cement?

Type 2 cement is specifically formulated to provide moderate resistance to sulfate attack, making it suitable for construction projects exposed to soils or groundwater with a moderate sulfate concentration. This characteristic is particularly important in certain environments where sulfates can cause deterioration of concrete over time, leading to costly repairs or structural failure.

In contrast to Type 1 cement, which lacks this specific resistance to sulfate and is typically used for general construction purposes, Type 2 is used in scenarios where sulfate exposure is a concern. The moderate resistance ensures that the concrete maintains its integrity and durability under those conditions, making Type 2 cement a more suitable choice for certain applications.

Other forms of cement, such as Type 3, may offer faster setting times or greater strength early on, while Type 1 serves a more general purpose. However, those characteristics are not the primary reasons for using Type 2 cement. Thus, the moderate resistance to sulfate attack is the defining feature that distinguishes Type 2 from Type 1 cement.