Question

What type of Portland Cement should be used in a concrete mix when the forms must be removed early?

1) Type I
2) Type II
3) Type III
4) Type IV

Answer 1

For early form removal in concrete projects, Type III Portland Cement is the best option as it provides high early strength, enabling quicker proceeding to the next stages of construction.

Step-by-step explanation:

When a concrete mix requires that forms must be removed early, the best type of Portland Cement to use is Type III. This type of cement is also known as High Early Strength Portland Cement. It is specifically engineered to gain strength more quickly than Type I and Type II cements, making it ideal for projects with a quick turnaround.

Type III cement achieves its high early strength in part due to a finer grind and different chemical composition which leads to a faster reaction and strength development within the first few days after mixing.