Which cement type is used for moderate sulfate exposure?

• A. Type I
• B. Type II
• C. Type III
• D. Type V

Answer: (B)

When sulfate-bearing surroundings can attack concrete, you need cement with the right level of sulfate resistance. Sulfates in soil or water react with hydrated cement compounds and can cause expansion and cracking over time. Cement types are defined by how well they resist these reactions: standard Type I has normal resistance, Type II provides moderate sulfate resistance, Type V is intended for severe sulfate exposure, and Type III focuses on early strength rather than sulfate resistance. For moderate sulfate exposure, Type II is the best fit because it offers better resistance to sulfate attack than standard Type I without the extra cost or specialized composition of Type V. Type III isn’t about sulfate resistance, so it isn’t appropriate for this need.