What is general purpose cement with no special properties called?

General purpose cement, which is widely used in construction for a variety of applications without any special properties or modifications, is known as Type I Cement. This type of cement is suitable for standard construction projects where high early strength or specific durability or sulfate resistance is not required. The lack of special properties signifies that Type I Cement can be used in a broad range of common applications, making it a versatile choice for general construction tasks.

In contrast, the other types of cement serve more specialized purposes. For instance, Type II Cement offers moderate sulfate resistance and is often used in environments exposed to moderate sulfate levels. Type III Cement is designed to attain high strength at an early age, making it ideal for projects that require rapid setting times. Lastly, Type IV Cement is characterized by low heat of hydration, which is beneficial in massive concrete structures where heat generation is a concern during curing. Each of these types fulfills specific needs, differentiating them from general purpose Type I Cement.