Correct Answer - Option 3 : 15%
Concept:
The cement when stored for very long period of time, its strength is going to decrease as the age of stored cement is increasing. When used after 1 year of storage, the strength of cement reduced by 40 to 50% as compared to freshly stored cement. The loss of strength at diferrent time interval is given below.
|
Age of cement
|
% Reduction in its strength
|
|
3 months
|
15-30
|
|
6 months
|
30-40
|
|
12 months
|
40-50
|
