Final answer:
Type II concrete is used for moderate sulfate resistance in construction projects.
Step-by-step explanation:
Type II concrete is used for moderate sulfate resistance. It is designed to withstand exposure to moderate levels of sulfate in the soil or water, which can cause the concrete to deteriorate over time. The addition of special chemicals in Type II concrete helps to minimize this deterioration, making it suitable for use in construction projects where moderate sulfate exposure is expected.