Question

Which of the following pairs in respect of Ordinary Portland Cement (OPC) are correctly matched ?
1. Initial setting time 30 minutes
2. Final setting time 10 hours
3. Normal consistency 10%

Select the correct answer using the codes given below:

• A. 1, 2 and 3
• B. 2 and 3
• C. 1 and 2
• D. 1 and 3

Answer 1

The correct option is C 1 and 2

According to IS code for Ordinary Portland Cement initial setting time should not be less than 30 minutes, final setting time should not be more than 600 minutes and normal consistency ranges from 20% - 30% by weight of cement.